56718902820 has 24 divisors (see below), whose sum is σ = 158812928064. Its totient is φ = 15125040736.

The previous prime is 56718902813. The next prime is 56718902857. The reversal of 56718902820 is 2820981765.

It is a hoax number, since the sum of its digits (48) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 56718902820.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 472657464 + ... + 472657583.

It is an arithmetic number, because the mean of its divisors is an integer number (6617205336).

Almost surely, 2^56718902820 is an apocalyptic number.

It is an amenable number.

56718902820 is an abundant number, since it is smaller than the sum of its proper divisors (102094025244).

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

56718902820 is a wasteful number, since it uses less digits than its factorization.

56718902820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 945315059 (or 945315057 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 48.

The spelling of 56718902820 in words is "fifty-six billion, seven hundred eighteen million, nine hundred two thousand, eight hundred twenty".