856538974474 has 64 divisors (see below), whose sum is σ = 1351383834240. Its totient is φ = 406646472960.

The previous prime is 856538974441. The next prime is 856538974519. The reversal of 856538974474 is 474479835658.

856538974474 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 490290469 + ... + 490292215.

It is an arithmetic number, because the mean of its divisors is an integer number (21115372410).

Almost surely, 2^856538974474 is an apocalyptic number.

856538974474 is a deficient number, since it is larger than the sum of its proper divisors (494844859766).

856538974474 is a wasteful number, since it uses less digits than its factorization.

856538974474 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2455.

The product of its digits is 812851200, while the sum is 70.

The spelling of 856538974474 in words is "eight hundred fifty-six billion, five hundred thirty-eight million, nine hundred seventy-four thousand, four hundred seventy-four".