317657668772 has 12 divisors (see below), whose sum is σ = 558722753820. Its totient is φ = 158022596256.

The previous prime is 317657668739. The next prime is 317657668781. The reversal of 317657668772 is 277866756713.

It can be written as a sum of positive squares in 2 ways, for example, as 300681142336 + 16976526436 = 548344^2 + 130294^2 .

It is a junction number, because it is equal to n+sod(n) for n = 317657668699 and 317657668708.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 201558647 + ... + 201560222.

It is an arithmetic number, because the mean of its divisors is an integer number (46560229485).

Almost surely, 2^317657668772 is an apocalyptic number.

It is an amenable number.

317657668772 is a deficient number, since it is larger than the sum of its proper divisors (241065085048).

317657668772 is a wasteful number, since it uses less digits than its factorization.

317657668772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 403119070 (or 403119068 counting only the distinct ones).

The product of its digits is 124467840, while the sum is 65.

The spelling of 317657668772 in words is "three hundred seventeen billion, six hundred fifty-seven million, six hundred sixty-eight thousand, seven hundred seventy-two".