315665105912 has 64 divisors (see below), whose sum is σ = 659086848000. Its totient is φ = 140750824320.

The previous prime is 315665105867. The next prime is 315665105923. The reversal of 315665105912 is 219501566513.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1809089 + ... + 1975887.

It is an arithmetic number, because the mean of its divisors is an integer number (10298232000).

Almost surely, 2^315665105912 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 315665105912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (329543424000).

315665105912 is an abundant number, since it is smaller than the sum of its proper divisors (343421742088).

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

315665105912 is a wasteful number, since it uses less digits than its factorization.

315665105912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167436 (or 167432 counting only the distinct ones).

The product of its (nonzero) digits is 243000, while the sum is 44.

The spelling of 315665105912 in words is "three hundred fifteen billion, six hundred sixty-five million, one hundred five thousand, nine hundred twelve".