56558767840 has 24 divisors (see below), whose sum is σ = 133620089400. Its totient is φ = 22623507072.

The previous prime is 56558767829. The next prime is 56558767847. The reversal of 56558767840 is 4876785565.

It is a Smith number, since the sum of its digits (61) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56558767847) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 176745990 + ... + 176746309.

It is an arithmetic number, because the mean of its divisors is an integer number (5567503725).

Almost surely, 2^56558767840 is an apocalyptic number.

It is an amenable number.

56558767840 is an abundant number, since it is smaller than the sum of its proper divisors (77061321560).

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

56558767840 is a wasteful number, since it uses less digits than its factorization.

56558767840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 353492314 (or 353492306 counting only the distinct ones).

The product of its (nonzero) digits is 56448000, while the sum is 61.

The spelling of 56558767840 in words is "fifty-six billion, five hundred fifty-eight million, seven hundred sixty-seven thousand, eight hundred forty".