63115617256 has 64 divisors (see below), whose sum is σ = 132406617600. Its totient is φ = 28050367488.

The previous prime is 63115617251. The next prime is 63115617263. The reversal of 63115617256 is 65271651136.

It is a super-2 number, since 2×63115617256² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (63115617251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 119406 + ... + 374818.

It is an arithmetic number, because the mean of its divisors is an integer number (2068853400).

Almost surely, 2^63115617256 is an apocalyptic number.

It is an amenable number.

63115617256 is an abundant number, since it is smaller than the sum of its proper divisors (69291000344).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

63115617256 is a wasteful number, since it uses less digits than its factorization.

63115617256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 255538 (or 255534 counting only the distinct ones).

The product of its digits is 226800, while the sum is 43.

The spelling of 63115617256 in words is "sixty-three billion, one hundred fifteen million, six hundred seventeen thousand, two hundred fifty-six".