56821314959 has 2 divisors, whose sum is σ = 56821314960. Its totient is φ = 56821314958.

The previous prime is 56821314883. The next prime is 56821314961. The reversal of 56821314959 is 95941312865.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 56821314959 - 2⁸ = 56821314703 is a prime.

Together with 56821314961, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 56821314959.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56821314859) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28410657479 + 28410657480.

It is an arithmetic number, because the mean of its divisors is an integer number (28410657480).

Almost surely, 2^56821314959 is an apocalyptic number.

56821314959 is a deficient number, since it is larger than the sum of its proper divisors (1).

56821314959 is an equidigital number, since it uses as much as digits as its factorization.

56821314959 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2332800, while the sum is 53.

The spelling of 56821314959 in words is "fifty-six billion, eight hundred twenty-one million, three hundred fourteen thousand, nine hundred fifty-nine".