317138846785 has 16 divisors (see below), whose sum is σ = 383236632576. Its totient is φ = 251936803008.

The previous prime is 317138846719. The next prime is 317138846789. The reversal of 317138846785 is 587648831713.

It is a cyclic number.

It is not a de Polignac number, because 317138846785 - 2⁷ = 317138846657 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (317138846789) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 84432 + ... + 800878.

It is an arithmetic number, because the mean of its divisors is an integer number (23952289536).

Almost surely, 2^317138846785 is an apocalyptic number.

It is an amenable number.

317138846785 is a deficient number, since it is larger than the sum of its proper divisors (66097785791).

317138846785 is a wasteful number, since it uses less digits than its factorization.

317138846785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 717072.

The product of its digits is 27095040, while the sum is 61.

The spelling of 317138846785 in words is "three hundred seventeen billion, one hundred thirty-eight million, eight hundred forty-six thousand, seven hundred eighty-five".