I am thinking of shifting it so right now I am reversing the string but insted of reversing string right now I want to reverse number.

If you are reversing numbers, you be limited to decimal values under low 10 digits (say 9 digits) or you'll have overflow problems. And if it ends in a zero, you can't reverse back to the original number.

 

What are your specs for reversing a number? What are the max number of digits?