56779923411797 has 2 divisors, whose sum is σ = 56779923411798. Its totient is φ = 56779923411796.

The previous prime is 56779923411737. The next prime is 56779923411811. The reversal of 56779923411797 is 79711432997765.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 42775667976721 + 14004255435076 = 6540311^2 + 3742226^2 .

It is a cyclic number.

It is not a de Polignac number, because 56779923411797 - 2⁶ = 56779923411733 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56779923411737) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28389961705898 + 28389961705899.

It is an arithmetic number, because the mean of its divisors is an integer number (28389961705899).

Almost surely, 2^{56779923411797} is an apocalyptic number.

It is an amenable number.

56779923411797 is a deficient number, since it is larger than the sum of its proper divisors (1).

56779923411797 is an equidigital number, since it uses as much as digits as its factorization.

56779923411797 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1260236880, while the sum is 77.

The spelling of 56779923411797 in words is "fifty-six trillion, seven hundred seventy-nine billion, nine hundred twenty-three million, four hundred eleven thousand, seven hundred ninety-seven".