318877331816 has 32 divisors (see below), whose sum is σ = 632185478400. Its totient is φ = 150369799680.

The previous prime is 318877331809. The next prime is 318877331863. The reversal of 318877331816 is 618133778813.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4669865 + ... + 4737656.

It is an arithmetic number, because the mean of its divisors is an integer number (19755796200).

Almost surely, 2^318877331816 is an apocalyptic number.

It is an amenable number.

318877331816 is a deficient number, since it is larger than the sum of its proper divisors (313308146584).

318877331816 is a wasteful number, since it uses less digits than its factorization.

318877331816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9407769 (or 9407765 counting only the distinct ones).

The product of its digits is 4064256, while the sum is 56.

The spelling of 318877331816 in words is "three hundred eighteen billion, eight hundred seventy-seven million, three hundred thirty-one thousand, eight hundred sixteen".