315637838868 has 24 divisors (see below), whose sum is σ = 803441772000. Its totient is φ = 95647829920.

The previous prime is 315637838863. The next prime is 315637838869. The reversal of 315637838868 is 868838736513.

It is a Harshad number since it is a multiple of its sum of digits (66).

It is a junction number, because it is equal to n+sod(n) for n = 315637838799 and 315637838808.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (315637838863) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1195597743 + ... + 1195598006.

It is an arithmetic number, because the mean of its divisors is an integer number (33476740500).

Almost surely, 2^315637838868 is an apocalyptic number.

It is an amenable number.

315637838868 is an abundant number, since it is smaller than the sum of its proper divisors (487803933132).

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

315637838868 is a wasteful number, since it uses less digits than its factorization.

315637838868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2391195767 (or 2391195765 counting only the distinct ones).

The product of its digits is 139345920, while the sum is 66.

The spelling of 315637838868 in words is "three hundred fifteen billion, six hundred thirty-seven million, eight hundred thirty-eight thousand, eight hundred sixty-eight".