856231674977 has 8 divisors (see below), whose sum is σ = 1004997796416. Its totient is φ = 714077381232.

The previous prime is 856231674937. The next prime is 856231675001. The reversal of 856231674977 is 779476132658.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 856231674977 - 2²⁴ = 856214897761 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (856231674937) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1652956643 + ... + 1652957160.

It is an arithmetic number, because the mean of its divisors is an integer number (125624724552).

Almost surely, 2^856231674977 is an apocalyptic number.

It is an amenable number.

856231674977 is a deficient number, since it is larger than the sum of its proper divisors (148766121439).

856231674977 is a wasteful number, since it uses less digits than its factorization.

856231674977 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3305913847.

The product of its digits is 106686720, while the sum is 65.

The spelling of 856231674977 in words is "eight hundred fifty-six billion, two hundred thirty-one million, six hundred seventy-four thousand, nine hundred seventy-seven".