56718902819 has 16 divisors (see below), whose sum is σ = 60174243840. Its totient is φ = 53346569760.

The previous prime is 56718902813. The next prime is 56718902857. The reversal of 56718902819 is 91820981765.

56718902819 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 56718902819 - 2⁸ = 56718902563 is a prime.

It is a super-2 number, since 2×56718902819² (a number of 22 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (56) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56718902813) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7919162 + ... + 7926320.

It is an arithmetic number, because the mean of its divisors is an integer number (3760890240).

Almost surely, 2^56718902819 is an apocalyptic number.

56718902819 is a deficient number, since it is larger than the sum of its proper divisors (3455341021).

56718902819 is a wasteful number, since it uses less digits than its factorization.

56718902819 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12890.

The product of its (nonzero) digits is 2177280, while the sum is 56.

The spelling of 56718902819 in words is "fifty-six billion, seven hundred eighteen million, nine hundred two thousand, eight hundred nineteen".