11722570056 has 48 divisors (see below), whose sum is σ = 31832470800. Its totient is φ = 3897204192.

The previous prime is 11722569953. The next prime is 11722570073. The reversal of 11722570056 is 65007522711.

11722570056 is a `hidden beast` number, since 1 + 17 + 22 + 570 + 0 + 56 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 11722570056.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 187506 + ... + 242081.

It is an arithmetic number, because the mean of its divisors is an integer number (663176475).

Almost surely, 2^11722570056 is an apocalyptic number.

It is an amenable number.

11722570056 is an abundant number, since it is smaller than the sum of its proper divisors (20109900744).

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

11722570056 is a wasteful number, since it uses less digits than its factorization.

11722570056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 429978 (or 429971 counting only the distinct ones).

The product of its (nonzero) digits is 29400, while the sum is 36.

The spelling of 11722570056 in words is "eleven billion, seven hundred twenty-two million, five hundred seventy thousand, fifty-six".