56656663910 has 64 divisors (see below), whose sum is σ = 127261545984. Its totient is φ = 17643225600.

The previous prime is 56656663907. The next prime is 56656663913. The reversal of 56656663910 is 1936665665.

It is an interprime number because it is at equal distance from previous prime (56656663907) and next prime (56656663913).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56656663913) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 831950 + ... + 897470.

It is an arithmetic number, because the mean of its divisors is an integer number (1988461656).

Almost surely, 2^56656663910 is an apocalyptic number.

56656663910 is an abundant number, since it is smaller than the sum of its proper divisors (70604882074).

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

56656663910 is a wasteful number, since it uses less digits than its factorization.

56656663910 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66669.

The product of its (nonzero) digits is 5248800, while the sum is 53.

The spelling of 56656663910 in words is "fifty-six billion, six hundred fifty-six million, six hundred sixty-three thousand, nine hundred ten".