65393879856 has 20 divisors (see below), whose sum is σ = 168934189752. Its totient is φ = 21797959936.

The previous prime is 65393879843. The next prime is 65393879867. The reversal of 65393879856 is 65897839356.

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, 681186201 + ... + 681186296.

Almost surely, 2^65393879856 is an apocalyptic number.

It is an amenable number.

65393879856 is an abundant number, since it is smaller than the sum of its proper divisors (103540309896).

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

65393879856 is a wasteful number, since it uses less digits than its factorization.

65393879856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1362372508 (or 1362372502 counting only the distinct ones).

The product of its digits is 293932800, while the sum is 69.

The spelling of 65393879856 in words is "sixty-five billion, three hundred ninety-three million, eight hundred seventy-nine thousand, eight hundred fifty-six".