318668747752 has 64 divisors (see below), whose sum is σ = 643381477200. Its totient is φ = 147421040640.

The previous prime is 318668747729. The next prime is 318668747767. The reversal of 318668747752 is 257747866813.

It can be written as a sum of positive squares in 8 ways, for example, as 51042557476 + 267626190276 = 225926^2 + 517326^2 .

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 15 ways as a sum of consecutive naturals, for example, 16358274 + ... + 16377742.

Almost surely, 2^318668747752 is an apocalyptic number.

It is an amenable number.

318668747752 is an abundant number, since it is smaller than the sum of its proper divisors (324712729448).

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

318668747752 is a wasteful number, since it uses less digits than its factorization.

318668747752 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21526 (or 21522 counting only the distinct ones).

The product of its digits is 94832640, while the sum is 64.

The spelling of 318668747752 in words is "three hundred eighteen billion, six hundred sixty-eight million, seven hundred forty-seven thousand, seven hundred fifty-two".