If your huge numbers are "whole", that is, they have nothing after a decimal... point, comma or whatever symbol you might use, and they fit inside the double datatype lua (and löve) uses (that is, if the numbers are smaller than 2^53, or 9 007 199 254 740 992) then use what Sulunia suggested, otherwise you can use what Tanner linked.
Me and my stuff True Neutral Aspirant. Why, yes, i do indeed enjoy sarcastically correcting others when they make the most blatant of spelling mistakes. No bullying or trolling the innocent tho.