56464808251 has 2 divisors, whose sum is σ = 56464808252. Its totient is φ = 56464808250.

The previous prime is 56464808243. The next prime is 56464808261. The reversal of 56464808251 is 15280846465.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 56464808251 - 2³ = 56464808243 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 56464808195 and 56464808204.

It is not a weakly prime, because it can be changed into another prime (56464808261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28232404125 + 28232404126.

It is an arithmetic number, because the mean of its divisors is an integer number (28232404126).

Almost surely, 2^56464808251 is an apocalyptic number.

56464808251 is a deficient number, since it is larger than the sum of its proper divisors (1).

56464808251 is an equidigital number, since it uses as much as digits as its factorization.

56464808251 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1843200, while the sum is 49.

The spelling of 56464808251 in words is "fifty-six billion, four hundred sixty-four million, eight hundred eight thousand, two hundred fifty-one".