Can someone help at a riddle? :)

Well... I just wanted to know if there's an mathematical standard for these numbers:

18003646889521991261145145198561145190830457651228 21773508434856284746889805210364991599118674519468 89521991534527446472611451451948561145065534527446 47261145145194856114506563561145198675635611451919 911800364688952199126114511991

If there's an equation or something like that... I have no idea of what that means... But i really believe that those numbers can be converted into letters, and this way, form something that makes sense :) well, if someone can help me, i'll be very thankful :)

If you wanna talk, get my msn:

angel_dragonwake@msn.com

Thanks ^^

-*Angel Dragonwake*