56400634651 has 2 divisors, whose sum is σ = 56400634652. Its totient is φ = 56400634650.

The previous prime is 56400634643. The next prime is 56400634663. The reversal of 56400634651 is 15643600465.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 56400634651 - 2³ = 56400634643 is a prime.

It is not a weakly prime, because it can be changed into another prime (56400634621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28200317325 + 28200317326.

It is an arithmetic number, because the mean of its divisors is an integer number (28200317326).

Almost surely, 2^56400634651 is an apocalyptic number.

56400634651 is a deficient number, since it is larger than the sum of its proper divisors (1).

56400634651 is an equidigital number, since it uses as much as digits as its factorization.

56400634651 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 259200, while the sum is 40.

The spelling of 56400634651 in words is "fifty-six billion, four hundred million, six hundred thirty-four thousand, six hundred fifty-one".