I know you said your name was Michael, but I believe the possibilities of randomly pressing 7 numbers and it being "Michael" is one in 2,097,152.
I say this because there are 8 possible digits you can press (1 and 0 don't have any letters), so that leaves out any phone numbers with 0 or 1. So I believe you just multiply the possibilities by the number of possibilities, so that is 8* 8* 8* 8* 8* 8* 8 or 8^7 power. Of course, I doubt anyone has a name of AAAAAAA. But whatever. Someone want to see if my math is right? I don't think there are other variables, right?