56598444391 has 16 divisors (see below), whose sum is σ = 57176215200. Its totient is φ = 56024546688.

The previous prime is 56598444389. The next prime is 56598444431. The reversal of 56598444391 is 19344489565.

It is a cyclic number.

It is not a de Polignac number, because 56598444391 - 2¹ = 56598444389 is a prime.

It is a super-2 number, since 2×56598444391² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56598444361) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 55871601 + ... + 55872613.

It is an arithmetic number, because the mean of its divisors is an integer number (3573513450).

Almost surely, 2^56598444391 is an apocalyptic number.

56598444391 is a deficient number, since it is larger than the sum of its proper divisors (577770809).

56598444391 is a wasteful number, since it uses less digits than its factorization.

56598444391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2418.

The product of its digits is 18662400, while the sum is 58.

The spelling of 56598444391 in words is "fifty-six billion, five hundred ninety-eight million, four hundred forty-four thousand, three hundred ninety-one".