318394920664 has 32 divisors (see below), whose sum is σ = 598959320400. Its totient is φ = 158673271680.

The previous prime is 318394920647. The next prime is 318394920673. The reversal of 318394920664 is 466029493813.

It is a Smith number, since the sum of its digits (55) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3030859 + ... + 3134149.

Almost surely, 2^318394920664 is an apocalyptic number.

It is an amenable number.

318394920664 is a deficient number, since it is larger than the sum of its proper divisors (280564399736).

318394920664 is a wasteful number, since it uses less digits than its factorization.

318394920664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104563 (or 104559 counting only the distinct ones).

The product of its (nonzero) digits is 6718464, while the sum is 55.

The spelling of 318394920664 in words is "three hundred eighteen billion, three hundred ninety-four million, nine hundred twenty thousand, six hundred sixty-four".