318657664612 has 12 divisors (see below), whose sum is σ = 637315329280. Its totient is φ = 136567570536.

The previous prime is 318657664607. The next prime is 318657664621. The reversal of 318657664612 is 216466756813.

It is a happy number.

318657664612 is an admirable number.

It is a super-2 number, since 2×318657664612² (a number of 24 digits) contains 22 as substring.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5690315412 + ... + 5690315467.

Almost surely, 2^318657664612 is an apocalyptic number.

It is an amenable number.

318657664612 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

318657664612 is a wasteful number, since it uses less digits than its factorization.

318657664612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11380630890 (or 11380630888 counting only the distinct ones).

The product of its digits is 8709120, while the sum is 55.

The spelling of 318657664612 in words is "three hundred eighteen billion, six hundred fifty-seven million, six hundred sixty-four thousand, six hundred twelve".