318630666816 has 784 divisors, whose sum is σ = 1193303753088. Its totient is φ = 82648304640.

The previous prime is 318630666787. The next prime is 318630666869. The reversal of 318630666816 is 618666036813.

It is a Harshad number since it is a multiple of its sum of digits (54).

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 111 ways as a sum of consecutive naturals, for example, 434693586 + ... + 434694318.

Almost surely, 2^318630666816 is an apocalyptic number.

318630666816 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 318630666816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (596651876544).

318630666816 is an abundant number, since it is smaller than the sum of its proper divisors (874673086272).

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

318630666816 is an frugal number, since it uses more digits than its factorization.

318630666816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 803 (or 756 counting only the distinct ones).

The product of its (nonzero) digits is 4478976, while the sum is 54.

The spelling of 318630666816 in words is "three hundred eighteen billion, six hundred thirty million, six hundred sixty-six thousand, eight hundred sixteen".