56718903564 has 96 divisors (see below), whose sum is σ = 155758498560. Its totient is φ = 17787361536.

The previous prime is 56718903559. The next prime is 56718903583. The reversal of 56718903564 is 46530981765.

56718903564 is a `hidden beast` number, since 5 + 6 + 71 + 8 + 9 + 0 + 3 + 564 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a self number, because there is not a number n which added to its sum of digits gives 56718903564.

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 31 ways as a sum of consecutive naturals, for example, 7169299 + ... + 7177205.

It is an arithmetic number, because the mean of its divisors is an integer number (1622484360).

Almost surely, 2^56718903564 is an apocalyptic number.

56718903564 is a gapful number since it is divisible by the number (54) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 56718903564, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (77879249280).

56718903564 is an abundant number, since it is smaller than the sum of its proper divisors (99039594996).

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

56718903564 is a wasteful number, since it uses less digits than its factorization.

56718903564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11844 (or 11836 counting only the distinct ones).

The product of its (nonzero) digits is 5443200, while the sum is 54.

The spelling of 56718903564 in words is "fifty-six billion, seven hundred eighteen million, nine hundred three thousand, five hundred sixty-four".