856323317206 has 64 divisors (see below), whose sum is σ = 1625716753920. Its totient is φ = 330032413440.

The previous prime is 856323317191. The next prime is 856323317249. The reversal of 856323317206 is 602713323658.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 657540 + ... + 1464583.

It is an arithmetic number, because the mean of its divisors is an integer number (25401824280).

Almost surely, 2^856323317206 is an apocalyptic number.

856323317206 is a deficient number, since it is larger than the sum of its proper divisors (769393436714).

856323317206 is a wasteful number, since it uses less digits than its factorization.

856323317206 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2122229.

The product of its (nonzero) digits is 1088640, while the sum is 46.

The spelling of 856323317206 in words is "eight hundred fifty-six billion, three hundred twenty-three million, three hundred seventeen thousand, two hundred six".