>This is what I have so far and it isn't working.
How isn't it working? Aside from the number probably being well out of range for an integer on your compiler, everything is fine. I'll go out on a limb and guess that that's the problem, and if you do this then it'll work perfectly:
p.s. The system function is declared in <cstdlib>. Not including it is technically an error even if your compiler allows it.
using namespace std;
#define phone "18005551234"
int main ( )
cout << phone;