56791886461 has 2 divisors, whose sum is σ = 56791886462. Its totient is φ = 56791886460.

The previous prime is 56791886381. The next prime is 56791886491. The reversal of 56791886461 is 16468819765.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 51207164100 + 5584722361 = 226290^2 + 74731^2 .

It is a cyclic number.

It is not a de Polignac number, because 56791886461 - 2¹⁷ = 56791755389 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 56791886461.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56791886491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28395943230 + 28395943231.

It is an arithmetic number, because the mean of its divisors is an integer number (28395943231).

Almost surely, 2^56791886461 is an apocalyptic number.

It is an amenable number.

56791886461 is a deficient number, since it is larger than the sum of its proper divisors (1).

56791886461 is an equidigital number, since it uses as much as digits as its factorization.

56791886461 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 17418240, while the sum is 61.

The spelling of 56791886461 in words is "fifty-six billion, seven hundred ninety-one million, eight hundred eighty-six thousand, four hundred sixty-one".