56905817868 has 48 divisors (see below), whose sum is σ = 149191308000. Its totient is φ = 18755472384.

The previous prime is 56905817851. The next prime is 56905817869. The reversal of 56905817868 is 86871850965.

56905817868 is a `hidden beast` number, since 569 + 0 + 5 + 8 + 1 + 7 + 8 + 68 = 666.

It is not an unprimeable number, because it can be changed into a prime (56905817869) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2950533 + ... + 2969756.

It is an arithmetic number, because the mean of its divisors is an integer number (3108152250).

Almost surely, 2^56905817868 is an apocalyptic number.

It is an amenable number.

56905817868 is an abundant number, since it is smaller than the sum of its proper divisors (92285490132).

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

56905817868 is a wasteful number, since it uses less digits than its factorization.

56905817868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5920391 (or 5920383 counting only the distinct ones).

The product of its (nonzero) digits is 29030400, while the sum is 63.

The spelling of 56905817868 in words is "fifty-six billion, nine hundred five million, eight hundred seventeen thousand, eight hundred sixty-eight".