856950829854 has 48 divisors (see below), whose sum is σ = 1993798065168. Its totient is φ = 244833794688.

The previous prime is 856950829849. The next prime is 856950829879. The reversal of 856950829854 is 458928059658.

It is a super-2 number, since 2×856950829854² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12647314 + ... + 12714890.

It is an arithmetic number, because the mean of its divisors is an integer number (41537459691).

Almost surely, 2^856950829854 is an apocalyptic number.

856950829854 is an abundant number, since it is smaller than the sum of its proper divisors (1136847235314).

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

856950829854 is a wasteful number, since it uses less digits than its factorization.

856950829854 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110729 (or 110722 counting only the distinct ones).

The product of its (nonzero) digits is 248832000, while the sum is 69.

The spelling of 856950829854 in words is "eight hundred fifty-six billion, nine hundred fifty million, eight hundred twenty-nine thousand, eight hundred fifty-four".