56877753815 has 4 divisors (see below), whose sum is σ = 68253304584. Its totient is φ = 45502203048.

The previous prime is 56877753811. The next prime is 56877753839. The reversal of 56877753815 is 51835777865.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 56877753815 - 2² = 56877753811 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 (56877753811) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5687775377 + ... + 5687775386.

It is an arithmetic number, because the mean of its divisors is an integer number (17063326146).

Almost surely, 2^56877753815 is an apocalyptic number.

56877753815 is a deficient number, since it is larger than the sum of its proper divisors (11375550769).

56877753815 is a wasteful number, since it uses less digits than its factorization.

56877753815 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11375550768.

The product of its digits is 49392000, while the sum is 62.

The spelling of 56877753815 in words is "fifty-six billion, eight hundred seventy-seven million, seven hundred fifty-three thousand, eight hundred fifteen".