56876899867865 has 128 divisors (see below), whose sum is σ = 88245780480000. Its totient is φ = 34153117286400.

The previous prime is 56876899867829. The next prime is 56876899867937.

56876899867865 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 56876899867865 - 2¹⁰ = 56876899866841 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 12234220061 + ... + 12234224709.

It is an arithmetic number, because the mean of its divisors is an integer number (689420160000).

Almost surely, 2^{56876899867865} is an apocalyptic number.

56876899867865 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

56876899867865 is a deficient number, since it is larger than the sum of its proper divisors (31368880612135).

56876899867865 is a wasteful number, since it uses less digits than its factorization.

56876899867865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9231.

The product of its digits is 526727577600, while the sum is 98.

The spelling of 56876899867865 in words is "fifty-six trillion, eight hundred seventy-six billion, eight hundred ninety-nine million, eight hundred sixty-seven thousand, eight hundred sixty-five".