Wiktionary
five hundred
alt. (context cardinal English) The cardinal number occurring after four hundred ninety-nine and before five hundred one, represented in Arabic numerals as 500. Ordinal: five-hundredth. num. (context cardinal English) The cardinal number occurring after four hundred ninety-nine and before five hundred one, represented in Arabic numerals as 500. Ordinal: five-hundredth.
WordNet
five hundred
Usage examples of "five hundred".
It would take five hundred ten-thousand-dollar notes to make five million dollars, and I doubt if there are that many in existence.