56715278815 has 8 divisors (see below), whose sum is σ = 73293591168. Its totient is φ = 41882052000.

The previous prime is 56715278797. The next prime is 56715278819. The reversal of 56715278815 is 51887251765.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 56715278815 - 2¹⁷ = 56715147743 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56715278819) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 436271311 + ... + 436271440.

It is an arithmetic number, because the mean of its divisors is an integer number (9161698896).

Almost surely, 2^56715278815 is an apocalyptic number.

56715278815 is a deficient number, since it is larger than the sum of its proper divisors (16578312353).

56715278815 is a wasteful number, since it uses less digits than its factorization.

56715278815 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 872542769.

The product of its digits is 4704000, while the sum is 55.

The spelling of 56715278815 in words is "fifty-six billion, seven hundred fifteen million, two hundred seventy-eight thousand, eight hundred fifteen".