318881865612 has 12 divisors (see below), whose sum is σ = 744057686456. Its totient is φ = 106293955200.

The previous prime is 318881865559. The next prime is 318881865619. The reversal of 318881865612 is 216568188813.

It is a tau number, because it is divible by the number of its divisors (12).

It is a hoax number, since the sum of its digits (57) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (318881865619) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13286744389 + ... + 13286744412.

Almost surely, 2^318881865612 is an apocalyptic number.

It is an amenable number.

318881865612 is an abundant number, since it is smaller than the sum of its proper divisors (425175820844).

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

318881865612 is a wasteful number, since it uses less digits than its factorization.

318881865612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26573488808 (or 26573488806 counting only the distinct ones).

The product of its digits is 4423680, while the sum is 57.

The spelling of 318881865612 in words is "three hundred eighteen billion, eight hundred eighty-one million, eight hundred sixty-five thousand, six hundred twelve".