A filtering loop for large numbers?

Question

we have x=1000000000999999999 and the last number in loop is x=1999999999000000000 after generating the first number x=x+9;
if we divided the number and sum it with itself , it must equals to 64 for examlpe 1+9+9+9+9+6+6+5=64
if the condition is true display the num otherwise continue the loop.

Answer 1

Show your attempt, you can't just tell the question and get the answer