331516681518156 has 12 divisors (see below), whose sum is σ = 773538923542392. Its totient is φ = 110505560506048.

The previous prime is 331516681518101. The next prime is 331516681518161. The reversal of 331516681518156 is 651815186615133.

It is a tau number, because it is divible by the number of its divisors (12).

It is a Smith number, since the sum of its digits (60) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 331516681518156.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13813195063245 + ... + 13813195063268.

It is an arithmetic number, because the mean of its divisors is an integer number (64461576961866).

Almost surely, 2^{331516681518156} is an apocalyptic number.

It is an amenable number.

331516681518156 is an abundant number, since it is smaller than the sum of its proper divisors (442022242024236).

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

331516681518156 is a wasteful number, since it uses less digits than its factorization.

331516681518156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27626390126520 (or 27626390126518 counting only the distinct ones).

The product of its digits is 15552000, while the sum is 60.

The spelling of 331516681518156 in words is "three hundred thirty-one trillion, five hundred sixteen billion, six hundred eighty-one million, five hundred eighteen thousand, one hundred fifty-six".