318665645396 has 24 divisors (see below), whose sum is σ = 638435883456. Its totient is φ = 136334292480.

The previous prime is 318665645381. The next prime is 318665645401. The reversal of 318665645396 is 693546566813.

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, 9845990 + ... + 9878301.

It is an arithmetic number, because the mean of its divisors is an integer number (26601495144).

Almost surely, 2^318665645396 is an apocalyptic number.

It is an amenable number.

318665645396 is an abundant number, since it is smaller than the sum of its proper divisors (319770238060).

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

318665645396 is a wasteful number, since it uses less digits than its factorization.

318665645396 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19724879 (or 19724877 counting only the distinct ones).

The product of its digits is 83980800, while the sum is 62.

The spelling of 318665645396 in words is "three hundred eighteen billion, six hundred sixty-five million, six hundred forty-five thousand, three hundred ninety-six".