56912972256 has 144 divisors (see below), whose sum is σ = 186146329824. Its totient is φ = 16157187072.

The previous prime is 56912972213. The next prime is 56912972279. The reversal of 56912972256 is 65227921965.

56912972256 is a `hidden beast` number, since 569 + 1 + 2 + 9 + 7 + 22 + 56 = 666.

It is a tau number, because it is divible by the number of its divisors (144).

It is a super-2 number, since 2×56912972256² (a number of 22 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (54) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 226606 + ... + 406418.

It is an arithmetic number, because the mean of its divisors is an integer number (1292682846).

Almost surely, 2^56912972256 is an apocalyptic number.

56912972256 is a gapful number since it is divisible by the number (56) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 56912972256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (93073164912).

56912972256 is an abundant number, since it is smaller than the sum of its proper divisors (129233357568).

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

56912972256 is a wasteful number, since it uses less digits than its factorization.

56912972256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 179993 (or 179982 counting only the distinct ones).

The product of its digits is 4082400, while the sum is 54.

The spelling of 56912972256 in words is "fifty-six billion, nine hundred twelve million, nine hundred seventy-two thousand, two hundred fifty-six".