56564896811 has 2 divisors, whose sum is σ = 56564896812. Its totient is φ = 56564896810.

The previous prime is 56564896781. The next prime is 56564896849. The reversal of 56564896811 is 11869846565.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 56564896811 - 2⁶ = 56564896747 is a prime.

It is not a weakly prime, because it can be changed into another prime (56564896411) 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, 28282448405 + 28282448406.

It is an arithmetic number, because the mean of its divisors is an integer number (28282448406).

Almost surely, 2^56564896811 is an apocalyptic number.

56564896811 is a deficient number, since it is larger than the sum of its proper divisors (1).

56564896811 is an equidigital number, since it uses as much as digits as its factorization.

56564896811 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12441600, while the sum is 59.

The spelling of 56564896811 in words is "fifty-six billion, five hundred sixty-four million, eight hundred ninety-six thousand, eight hundred eleven".