856454454658 has 32 divisors (see below), whose sum is σ = 1422304054272. Its totient is φ = 383518942800.

The previous prime is 856454454631. The next prime is 856454454671.

856454454658 is nontrivially palindromic in base 10.

856454454658 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 856454454658.

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, 1824885 + ... + 2245687.

It is an arithmetic number, because the mean of its divisors is an integer number (44447001696).

Almost surely, 2^856454454658 is an apocalyptic number.

856454454658 is a deficient number, since it is larger than the sum of its proper divisors (565849599614).

856454454658 is a wasteful number, since it uses less digits than its factorization.

856454454658 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 422190.

The product of its digits is 368640000, while the sum is 64.

The spelling of 856454454658 in words is "eight hundred fifty-six billion, four hundred fifty-four million, four hundred fifty-four thousand, six hundred fifty-eight".