316640686642 has 32 divisors (see below), whose sum is σ = 554563791360. Its totient is φ = 132767459520.

The previous prime is 316640686633. The next prime is 316640686693. The reversal of 316640686642 is 246686046613.

It is a super-2 number, since 2×316640686642² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 316640686642.

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, 1748892 + ... + 1921432.

It is an arithmetic number, because the mean of its divisors is an integer number (17330118480).

Almost surely, 2^316640686642 is an apocalyptic number.

316640686642 is a deficient number, since it is larger than the sum of its proper divisors (237923104718).

316640686642 is a wasteful number, since it uses less digits than its factorization.

316640686642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 175386.

The product of its (nonzero) digits is 5971968, while the sum is 52.

The spelling of 316640686642 in words is "three hundred sixteen billion, six hundred forty million, six hundred eighty-six thousand, six hundred forty-two".