gorge/numbers.js

function render(val, places=1, smallPlaces = 0) {
  return numberText(val, places, smallPlaces);
}

function numberText(val, places=1, smallPlaces = 0) {
  if (val < 1000) {
    return round(val, smallPlaces);
  }

  let power = Math.floor(Math.log10(val));

  let order = Math.floor(power / 3);

  val = round(val / Math.pow(1000, order), places).toFixed(places);

  return val + " " + _numberWords[order];
}

_numberWords = {
  1: "thousand",
  2: "million",
  3: "billion",
  4: "trillion",
  5: "quadrillion",
  6: "septillion",
  7: "sextillion",
  8: "octillion",
  9: "nonillion",
  10: "decillion"
}