318704872717 has 32 divisors (see below), whose sum is σ = 399498428160. Its totient is φ = 246999367680.

The previous prime is 318704872699. The next prime is 318704872721. The reversal of 318704872717 is 717278407813.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-318704872717 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (318704872747) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 13385259 + ... + 13409047.

It is an arithmetic number, because the mean of its divisors is an integer number (12484325880).

Almost surely, 2^318704872717 is an apocalyptic number.

It is an amenable number.

318704872717 is a deficient number, since it is larger than the sum of its proper divisors (80793555443).

318704872717 is a wasteful number, since it uses less digits than its factorization.

318704872717 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24741.

The product of its (nonzero) digits is 3687936, while the sum is 55.

The spelling of 318704872717 in words is "three hundred eighteen billion, seven hundred four million, eight hundred seventy-two thousand, seven hundred seventeen".