56639612868211 has 2 divisors, whose sum is σ = 56639612868212. Its totient is φ = 56639612868210.

The previous prime is 56639612868173. The next prime is 56639612868403. The reversal of 56639612868211 is 11286821693665.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 56639612868211 - 2²⁹ = 56639075997299 is a prime.

It is not a weakly prime, because it can be changed into another prime (56639612868011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28319806434105 + 28319806434106.

It is an arithmetic number, because the mean of its divisors is an integer number (28319806434106).

Almost surely, 2^{56639612868211} is an apocalyptic number.

56639612868211 is a deficient number, since it is larger than the sum of its proper divisors (1).

56639612868211 is an equidigital number, since it uses as much as digits as its factorization.

56639612868211 is an evil number, because the sum of its binary digits is even.

The product of its digits is 44789760, while the sum is 64.

The spelling of 56639612868211 in words is "fifty-six trillion, six hundred thirty-nine billion, six hundred twelve million, eight hundred sixty-eight thousand, two hundred eleven".