56814816533 has 2 divisors, whose sum is σ = 56814816534. Its totient is φ = 56814816532.

The previous prime is 56814816523. The next prime is 56814816551. The reversal of 56814816533 is 33561841865.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 54073456369 + 2741360164 = 232537^2 + 52358^2 .

It is a cyclic number.

It is not a de Polignac number, because 56814816533 - 2⁴ = 56814816517 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56814816523) 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, 28407408266 + 28407408267.

It is an arithmetic number, because the mean of its divisors is an integer number (28407408267).

Almost surely, 2^56814816533 is an apocalyptic number.

It is an amenable number.

56814816533 is a deficient number, since it is larger than the sum of its proper divisors (1).

56814816533 is an equidigital number, since it uses as much as digits as its factorization.

56814816533 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2073600, while the sum is 50.

The spelling of 56814816533 in words is "fifty-six billion, eight hundred fourteen million, eight hundred sixteen thousand, five hundred thirty-three".