56623506520 has 64 divisors (see below), whose sum is σ = 146244890880. Its totient is φ = 19328228736.

The previous prime is 56623506509. The next prime is 56623506553. The reversal of 56623506520 is 2560532665.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent number.

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, 381874 + ... + 508993.

It is an arithmetic number, because the mean of its divisors is an integer number (2285076420).

Almost surely, 2^56623506520 is an apocalyptic number.

It is an amenable number.

56623506520 is an abundant number, since it is smaller than the sum of its proper divisors (89621384360).

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

56623506520 is a wasteful number, since it uses less digits than its factorization.

56623506520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 891112 (or 891108 counting only the distinct ones).

The product of its (nonzero) digits is 324000, while the sum is 40.

The spelling of 56623506520 in words is "fifty-six billion, six hundred twenty-three million, five hundred six thousand, five hundred twenty".