56620216799 has 2 divisors, whose sum is σ = 56620216800. Its totient is φ = 56620216798.

The previous prime is 56620216789. The next prime is 56620216837. The reversal of 56620216799 is 99761202665.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 56620216799 - 2²⁰ = 56619168223 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 56620216799.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56620216729) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28310108399 + 28310108400.

It is an arithmetic number, because the mean of its divisors is an integer number (28310108400).

Almost surely, 2^56620216799 is an apocalyptic number.

56620216799 is a deficient number, since it is larger than the sum of its proper divisors (1).

56620216799 is an equidigital number, since it uses as much as digits as its factorization.

56620216799 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2449440, while the sum is 53.

The spelling of 56620216799 in words is "fifty-six billion, six hundred twenty million, two hundred sixteen thousand, seven hundred ninety-nine".