856779713712 has 90 divisors (see below), whose sum is σ = 2596427058732. Its totient is φ = 263624519808.

The previous prime is 856779713683. The next prime is 856779713731. The reversal of 856779713712 is 217317977658.

856779713712 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 856779713712.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 17578798 + ... + 17627469.

Almost surely, 2^856779713712 is an apocalyptic number.

It is an amenable number.

856779713712 is an abundant number, since it is smaller than the sum of its proper divisors (1739647345020).

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

856779713712 is a wasteful number, since it uses less digits than its factorization.

856779713712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35206307 (or 35206285 counting only the distinct ones).

The product of its digits is 31116960, while the sum is 63.

The spelling of 856779713712 in words is "eight hundred fifty-six billion, seven hundred seventy-nine million, seven hundred thirteen thousand, seven hundred twelve".