$\mathrm{convert}\left(0\,'\mathrm{english}'\right)$

$''zero''$

$\mathrm{convert}\left(0\,'\mathrm{english}'\,'\mathrm{cardinal}'\right)$

$''zero''$

$\mathrm{convert}\left(-5\,'\mathrm{english}'\right)$

$''minus\; five''$

$\mathrm{convert}\left(905684\,'\mathrm{english}'\right)$

$''nine\; hundred\; five\; thousand\; six\; hundred\; eighty-four''$

$\mathrm{convert}\left(905684\,'\mathrm{english}'\,'\mathrm{And}'\right)$

$''nine\; hundred\; and\; five\; thousand\; six\; hundred\; and\; eighty-four''$

$\mathrm{convert}\left(12345678901234567890\,'\mathrm{english}'\right)$

$''twelve\; quintillion\; three\; hundred\; forty-five\; quadrillion\; six\; hundred\; seventy-eight\; trillion\; nine\; hundred\; one\; billion\; two\; hundred\; thirty-four\; million\; five\; hundred\; sixty-seven\; thousand\; eight\; hundred\; ninety''$

$\mathrm{convert}\left({10}^{66}-1\,'\mathrm{english}'\right)$

$''nine\; hundred\; ninety-nine\; vigintillion\; nine\; hundred\; ninety-nine\; novemdecillion\; nine\; hundred\; ninety-nine\; octodecillion\; nine\; hundred\; ninety-nine\; septendecillion\; nine\; hundred\; ninety-nine\; sexdecillion\; nine\; hundred\; ninety-nine\; quindecillion\; nine\; hundred\; ninety-nine\; quattuordecillion\; nine\; hundred\; ninety-nine\; tredecillion\; nine\; hundred\; ninety-nine\; duodecillion\; nine\; hundred\; ninety-nine\; undecillion\; nine\; hundred\; ninety-nine\; decillion\; nine\; hundred\; ninety-nine\; nonillion\; nine\; hundred\; ninety-nine\; octillion\; nine\; hundred\; ninety-nine\; septillion\; nine\; hundred\; ninety-nine\; sextillion\; nine\; hundred\; ninety-nine\; quintillion\; nine\; hundred\; ninety-nine\; quadrillion\; nine\; hundred\; ninety-nine\; trillion\; nine\; hundred\; ninety-nine\; billion\; nine\; hundred\; ninety-nine\; million\; nine\; hundred\; ninety-nine\; thousand\; nine\; hundred\; ninety-nine''$

$\mathrm{convert}\left({10}^{66}\,'\mathrm{english}'\right)$

Error, (in positive) number 1000000000000000000000000000000000000000000000000000000000000000000 is too big

$m≔\mathrm{convert}\left(-1138\,'\mathrm{english}'\right)$

$m≔''minus\; one\; thousand\; one\; hundred\; thirty-eight''$

$\mathrm{convert}\left(m\,'\mathrm{english}'\right)$

$\mathrm{-1138}$

$n≔\mathrm{convert}\left(8675309\,'\mathrm{english}'\,'\mathrm{And}'\right)$

$n≔''eight\; million\; six\; hundred\; and\; seventy-five\; thousand\; three\; hundred\; and\; nine''$

$\mathrm{convert}\left(n\,'\mathrm{english}'\right)$

$8675309$

$\mathrm{convert}\left(n\,'\mathrm{english}'\,'\mathrm{integer}'\right)$

$8675309$

$\mathrm{convert}\left(0\,'\mathrm{english}'\,'\mathrm{ordinal}'\right)$

$''0th''$

$\mathrm{convert}\left(1001\,'\mathrm{english}'\,'\mathrm{ordinal}'\right)$

$''1001st''$

$\mathrm{convert}\left(123456789012345678902\,'\mathrm{english}'\,'\mathrm{ordinal}'\right)$

$''123456789012345678902nd''$

$\mathrm{convert}\left(-3\,'\mathrm{english}'\,'\mathrm{ordinal}'\right)$

Error, (in `convert/english`) only nonnegative numbers can be converted to ordinal form