518668371885 has 16 divisors (see below), whose sum is σ = 852298298496. Its totient is φ = 269146830528.

The previous prime is 518668371877. The next prime is 518668371899. The reversal of 518668371885 is 588173866815.

It is not a de Polignac number, because 518668371885 - 2³ = 518668371877 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 467268249 + ... + 467269358.

It is an arithmetic number, because the mean of its divisors is an integer number (53268643656).

Almost surely, 2^518668371885 is an apocalyptic number.

It is an amenable number.

518668371885 is a deficient number, since it is larger than the sum of its proper divisors (333629926611).

518668371885 is a wasteful number, since it uses less digits than its factorization.

518668371885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 934537652.

The product of its digits is 77414400, while the sum is 66.

The spelling of 518668371885 in words is "five hundred eighteen billion, six hundred sixty-eight million, three hundred seventy-one thousand, eight hundred eighty-five".