331718885916 has 144 divisors (see below), whose sum is σ = 870095022720. Its totient is φ = 98260905600.

The previous prime is 331718885893. The next prime is 331718885921. The reversal of 331718885916 is 619588817133.

It is a happy number.

It is a super-2 number, since 2×331718885916² (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 331718885916.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 12731190 + ... + 12757218.

Almost surely, 2^331718885916 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 331718885916, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (435047511360).

331718885916 is an abundant number, since it is smaller than the sum of its proper divisors (538376136804).

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

331718885916 is a wasteful number, since it uses less digits than its factorization.

331718885916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26256 (or 26243 counting only the distinct ones).

The product of its digits is 8709120, while the sum is 60.

The spelling of 331718885916 in words is "three hundred thirty-one billion, seven hundred eighteen million, eight hundred eighty-five thousand, nine hundred sixteen".