56439264338 has 6 divisors (see below), whose sum is σ = 84659400471. Its totient is φ = 28219464182.

The previous prime is 56439264313. The next prime is 56439264397. The reversal of 56439264338 is 83346293465.

It can be written as a sum of positive squares in only one way, i.e., 28219632169 + 28219632169 = 167987^2 + 167987^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=167987.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 56439264338.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 251981 + ... + 419967.

Almost surely, 2^56439264338 is an apocalyptic number.

56439264338 is a deficient number, since it is larger than the sum of its proper divisors (28220136133).

56439264338 is an frugal number, since it uses more digits than its factorization.

56439264338 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 335976 (or 167989 counting only the distinct ones).

The product of its digits is 11197440, while the sum is 53.

The spelling of 56439264338 in words is "fifty-six billion, four hundred thirty-nine million, two hundred sixty-four thousand, three hundred thirty-eight".