56558641338 has 16 divisors (see below), whose sum is σ = 125685869760. Its totient is φ = 18852880428.

The previous prime is 56558641259. The next prime is 56558641361. The reversal of 56558641338 is 83314685565.

It is a happy number.

56558641338 is a `hidden beast` number, since 56 + 5 + 586 + 4 + 1 + 3 + 3 + 8 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54), and also a Moran number because the ratio is a prime number: 1047382247 = 56558641338 / (5 + 6 + 5 + 5 + 8 + 6 + 4 + 1 + 3 + 3 + 8).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 523691070 + ... + 523691177.

It is an arithmetic number, because the mean of its divisors is an integer number (7855366860).

Almost surely, 2^56558641338 is an apocalyptic number.

56558641338 is an abundant number, since it is smaller than the sum of its proper divisors (69127228422).

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

56558641338 is a wasteful number, since it uses less digits than its factorization.

56558641338 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1047382258 (or 1047382252 counting only the distinct ones).

The product of its digits is 10368000, while the sum is 54.

The spelling of 56558641338 in words is "fifty-six billion, five hundred fifty-eight million, six hundred forty-one thousand, three hundred thirty-eight".