856318814868 has 48 divisors (see below), whose sum is σ = 2182276264896. Its totient is φ = 259186306560.

The previous prime is 856318814821. The next prime is 856318814893. The reversal of 856318814868 is 868418813658.

It is a Harshad number since it is a multiple of its sum of digits (66).

It is a junction number, because it is equal to n+sod(n) for n = 856318814799 and 856318814808.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3690021 + ... + 3915212.

It is an arithmetic number, because the mean of its divisors is an integer number (45464088852).

Almost surely, 2^856318814868 is an apocalyptic number.

It is an amenable number.

856318814868 is an abundant number, since it is smaller than the sum of its proper divisors (1325957450028).

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

856318814868 is a wasteful number, since it uses less digits than its factorization.

856318814868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7606104 (or 7606102 counting only the distinct ones).

The product of its digits is 70778880, while the sum is 66.

The spelling of 856318814868 in words is "eight hundred fifty-six billion, three hundred eighteen million, eight hundred fourteen thousand, eight hundred sixty-eight".