56816367321 has 16 divisors (see below), whose sum is σ = 86609556864. Its totient is φ = 32454407424.

The previous prime is 56816367319. The next prime is 56816367323. The reversal of 56816367321 is 12376361865.

It is an interprime number because it is at equal distance from previous prime (56816367319) and next prime (56816367323).

It is not a de Polignac number, because 56816367321 - 2¹ = 56816367319 is a prime.

It is not an unprimeable number, because it can be changed into a prime (56816367323) 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, 445776 + ... + 558881.

It is an arithmetic number, because the mean of its divisors is an integer number (5413097304).

Almost surely, 2^56816367321 is an apocalyptic number.

It is an amenable number.

56816367321 is a deficient number, since it is larger than the sum of its proper divisors (29793189543).

56816367321 is a wasteful number, since it uses less digits than its factorization.

56816367321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1007360.

The product of its digits is 1088640, while the sum is 48.

The spelling of 56816367321 in words is "fifty-six billion, eight hundred sixteen million, three hundred sixty-seven thousand, three hundred twenty-one".