Facebook IDs in fboauth_fbid_load() may exceed 32-bit integer limit

I am having issues getting the correct value out of fboauth_fbid_load. My facebook id is somewhere in the neighborhood of 100 trillion yet the function keeps returning the value 2,147,483,647 for my user.

That function is type casting the facebook id as an integer but I am running on a 32-bit system and the largest integer it can handle is the value it's returning. If I remove the type casting, then everything works just fine.