395871821968 has 20 divisors (see below), whose sum is σ = 876573320320. Its totient is φ = 169659352224.

The previous prime is 395871821953. The next prime is 395871821977. The reversal of 395871821968 is 869128178593.

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, 1767284808 + ... + 1767285031.

It is an arithmetic number, because the mean of its divisors is an integer number (43828666016).

Almost surely, 2^395871821968 is an apocalyptic number.

It is an amenable number.

395871821968 is an abundant number, since it is smaller than the sum of its proper divisors (480701498352).

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

395871821968 is a wasteful number, since it uses less digits than its factorization.

395871821968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3534569854 (or 3534569848 counting only the distinct ones).

The product of its digits is 52254720, while the sum is 67.

The spelling of 395871821968 in words is "three hundred ninety-five billion, eight hundred seventy-one million, eight hundred twenty-one thousand, nine hundred sixty-eight".