656523656056 has 32 divisors (see below), whose sum is σ = 1236918988800. Its totient is φ = 326680342240.

The previous prime is 656523656023. The next prime is 656523656057. The reversal of 656523656056 is 650656325656.

It is a happy number.

It is a super-2 number, since 2×656523656056² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 656523655988 and 656523656006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (656523656057) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2918241 + ... + 3135151.

It is an arithmetic number, because the mean of its divisors is an integer number (38653718400).

Almost surely, 2^656523656056 is an apocalyptic number.

It is an amenable number.

656523656056 is a deficient number, since it is larger than the sum of its proper divisors (580395332744).

656523656056 is a wasteful number, since it uses less digits than its factorization.

656523656056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 218739 (or 218735 counting only the distinct ones).

The product of its (nonzero) digits is 29160000, while the sum is 55.

The spelling of 656523656056 in words is "six hundred fifty-six billion, five hundred twenty-three million, six hundred fifty-six thousand, fifty-six".