56968918861 has 2 divisors, whose sum is σ = 56968918862. Its totient is φ = 56968918860.

The previous prime is 56968918849. The next prime is 56968918871. The reversal of 56968918861 is 16881986965.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 48921034761 + 8047884100 = 221181^2 + 89710^2 .

It is a cyclic number.

It is not a de Polignac number, because 56968918861 - 2¹⁹ = 56968394573 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56968918871) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28484459430 + 28484459431.

It is an arithmetic number, because the mean of its divisors is an integer number (28484459431).

Almost surely, 2^56968918861 is an apocalyptic number.

It is an amenable number.

56968918861 is a deficient number, since it is larger than the sum of its proper divisors (1).

56968918861 is an equidigital number, since it uses as much as digits as its factorization.

56968918861 is an evil number, because the sum of its binary digits is even.

The product of its digits is 44789760, while the sum is 67.

The spelling of 56968918861 in words is "fifty-six billion, nine hundred sixty-eight million, nine hundred eighteen thousand, eight hundred sixty-one".