56634794861 has 2 divisors, whose sum is σ = 56634794862. Its totient is φ = 56634794860.

The previous prime is 56634794851. The next prime is 56634794911. The reversal of 56634794861 is 16849743665.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 38820820900 + 17813973961 = 197030^2 + 133469^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56634794861 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 56634794861.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56634794851) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28317397430 + 28317397431.

It is an arithmetic number, because the mean of its divisors is an integer number (28317397431).

Almost surely, 2^56634794861 is an apocalyptic number.

It is an amenable number.

56634794861 is a deficient number, since it is larger than the sum of its proper divisors (1).

56634794861 is an equidigital number, since it uses as much as digits as its factorization.

56634794861 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 26127360, while the sum is 59.

The spelling of 56634794861 in words is "fifty-six billion, six hundred thirty-four million, seven hundred ninety-four thousand, eight hundred sixty-one".