Fix missing quintillion, add numbers up to vigintillion, add compound numbers

numbers.js

@@ -11,20 +11,34 @@ function numberText(val, places=1, smallPlaces = 0) {
 
   let order = Math.floor(power / 3);
 
-  val = round(val / Math.pow(1000, order), places).toFixed(places);
+  adjusted = round(val / Math.pow(1000, order), places).toFixed(places);
 
-  return val + " " + _numberWords[order];
+  if (order <= 21)
+    return adjusted + " " + _numberWords[order - 1];
+  else
+    return numberText(val / Math.pow(10, 63), places, smallPlaces) + " vigintillion"
 }
 
 _numberWords = {
-  1: "thousand",
-  2: "million",
-  3: "billion",
-  4: "trillion",
-  5: "quadrillion",
+  0: "thousand",
+  1: "million",
+  2: "billion",
+  3: "trillion",
+  4: "quadrillion",
+  5: "quintillion",
   6: "septillion",
   7: "sextillion",
   8: "octillion",
   9: "nonillion",
-  10: "decillion"
+  10: "decillion",
+  11: "undecillion",
+  12: "duodecillion",
+  13: "tredecillion",
+  14: "quattuordecillion",
+  15: "quindecillion",
+  16: "sexdecillion",
+  17: "septendecillion",
+  18: "octodecillion",
+  19: "novemdecillion",
+  20: "vigintillion",
 }