Synonyms and related words :
astronomical number, billion, decillion, duodecillion, googolplex, infinitude, infinity, jillion, large number, nonillion, novemdecillion, octillion, octodecillion, quadrillion, quattuordecillion, quindecillion, quintillion, septillion, sexdecillion, sextillion, tredecillion, trillion, undecillion, vigintillion, zillion