56837731087 has 2 divisors, whose sum is σ = 56837731088. Its totient is φ = 56837731086.

The previous prime is 56837731079. The next prime is 56837731109. The reversal of 56837731087 is 78013773865.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 56837731087 - 2³ = 56837731079 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56831731087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28418865543 + 28418865544.

It is an arithmetic number, because the mean of its divisors is an integer number (28418865544).

Almost surely, 2^56837731087 is an apocalyptic number.

56837731087 is a deficient number, since it is larger than the sum of its proper divisors (1).

56837731087 is an equidigital number, since it uses as much as digits as its factorization.

56837731087 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5927040, while the sum is 55.

The spelling of 56837731087 in words is "fifty-six billion, eight hundred thirty-seven million, seven hundred thirty-one thousand, eighty-seven".