56837563837 has 2 divisors, whose sum is σ = 56837563838. Its totient is φ = 56837563836.

The previous prime is 56837563777. The next prime is 56837563841. The reversal of 56837563837 is 73836573865.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 53093837241 + 3743726596 = 230421^2 + 61186^2 .

It is a cyclic number.

It is not a de Polignac number, because 56837563837 - 2²⁷ = 56703346109 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56837563847) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28418781918 + 28418781919.

It is an arithmetic number, because the mean of its divisors is an integer number (28418781919).

Almost surely, 2^56837563837 is an apocalyptic number.

It is an amenable number.

56837563837 is a deficient number, since it is larger than the sum of its proper divisors (1).

56837563837 is an equidigital number, since it uses as much as digits as its factorization.

56837563837 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 76204800, while the sum is 61.

The spelling of 56837563837 in words is "fifty-six billion, eight hundred thirty-seven million, five hundred sixty-three thousand, eight hundred thirty-seven".