5116816818 has 20 divisors (see below), whose sum is σ = 11465460270. Its totient is φ = 1705605552.

The previous prime is 5116816759. The next prime is 5116816829. The reversal of 5116816818 is 8186186115.

It is a happy number.

5116816818 is a `hidden beast` number, since 511 + 68 + 1 + 68 + 18 = 666.

It can be written as a sum of positive squares in only one way, i.e., 4987608129 + 129208689 = 70623^2 + 11367^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 15792483 + ... + 15792806.

Almost surely, 2^5116816818 is an apocalyptic number.

5116816818 is an abundant number, since it is smaller than the sum of its proper divisors (6348643452).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

5116816818 is a wasteful number, since it uses less digits than its factorization.

5116816818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31585303 (or 31585294 counting only the distinct ones).

The product of its digits is 92160, while the sum is 45.

The square root of 5116816818 is about 71531.9286612629. The cubic root of 5116816818 is about 1723.1904926792.

The spelling of 5116816818 in words is "five billion, one hundred sixteen million, eight hundred sixteen thousand, eight hundred eighteen".