56623252656 has 80 divisors (see below), whose sum is σ = 155062646784. Its totient is φ = 17743352832.

The previous prime is 56623252633. The next prime is 56623252669. The reversal of 56623252656 is 65625232665.

It is a super-2 number, since 2×56623252656² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 664005 + ... + 744411.

Almost surely, 2^56623252656 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 56623252656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (77531323392).

56623252656 is an abundant number, since it is smaller than the sum of its proper divisors (98439394128).

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

56623252656 is a wasteful number, since it uses less digits than its factorization.

56623252656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81298 (or 81292 counting only the distinct ones).

The product of its digits is 3888000, while the sum is 48.

The spelling of 56623252656 in words is "fifty-six billion, six hundred twenty-three million, two hundred fifty-two thousand, six hundred fifty-six".