856004958722634 has 32 divisors (see below), whose sum is σ = 2024051133928320. Its totient is φ = 236139298957632.

The previous prime is 856004958722623. The next prime is 856004958722699. The reversal of 856004958722634 is 436227859400658.

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, 351397765089 + ... + 351397767524.

It is an arithmetic number, because the mean of its divisors is an integer number (63251597935260).

Almost surely, 2^{856004958722634} is an apocalyptic number.

856004958722634 is an abundant number, since it is smaller than the sum of its proper divisors (1168046175205686).

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

856004958722634 is a wasteful number, since it uses less digits than its factorization.

856004958722634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 702795532654.

The product of its (nonzero) digits is 696729600, while the sum is 69.

The spelling of 856004958722634 in words is "eight hundred fifty-six trillion, four billion, nine hundred fifty-eight million, seven hundred twenty-two thousand, six hundred thirty-four".