56991668594598 has 24 divisors (see below), whose sum is σ = 123575002138848. Its totient is φ = 18982906939152.

The previous prime is 56991668594587. The next prime is 56991668594629. The reversal of 56991668594598 is 89549586619965.

56991668594598 is a `hidden beast` number, since 5 + 6 + 9 + 9 + 1 + 6 + 6 + 8 + 5 + 9 + 4 + 598 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1192969261 + ... + 1193017032.

It is an arithmetic number, because the mean of its divisors is an integer number (5148958422452).

Almost surely, 2^{56991668594598} is an apocalyptic number.

56991668594598 is an abundant number, since it is smaller than the sum of its proper divisors (66583333544250).

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

56991668594598 is a wasteful number, since it uses less digits than its factorization.

56991668594598 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2385987628 (or 2385987625 counting only the distinct ones).

The product of its digits is 45349632000, while the sum is 90.

The spelling of 56991668594598 in words is "fifty-six trillion, nine hundred ninety-one billion, six hundred sixty-eight million, five hundred ninety-four thousand, five hundred ninety-eight".