856323317180 has 12 divisors (see below), whose sum is σ = 1798278966120. Its totient is φ = 342529326864.

The previous prime is 856323317131. The next prime is 856323317191. The reversal of 856323317180 is 81713323658.

It is a congruent number.

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, 21408082910 + ... + 21408082949.

It is an arithmetic number, because the mean of its divisors is an integer number (149856580510).

Almost surely, 2^856323317180 is an apocalyptic number.

It is an amenable number.

856323317180 is an abundant number, since it is smaller than the sum of its proper divisors (941955648940).

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

856323317180 is a wasteful number, since it uses less digits than its factorization.

856323317180 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42816165868 (or 42816165866 counting only the distinct ones).

The product of its (nonzero) digits is 725760, while the sum is 47.

The spelling of 856323317180 in words is "eight hundred fifty-six billion, three hundred twenty-three million, three hundred seventeen thousand, one hundred eighty".