856110583172 has 12 divisors (see below), whose sum is σ = 1613439176076. Its totient is φ = 395127961440.

The previous prime is 856110583169. The next prime is 856110583213. The reversal of 856110583172 is 271385011658.

It can be written as a sum of positive squares in 2 ways, for example, as 353066509636 + 503044073536 = 594194^2 + 709256^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8231832479 + ... + 8231832582.

It is an arithmetic number, because the mean of its divisors is an integer number (134453264673).

Almost surely, 2^856110583172 is an apocalyptic number.

It is an amenable number.

856110583172 is a deficient number, since it is larger than the sum of its proper divisors (757328592904).

856110583172 is a wasteful number, since it uses less digits than its factorization.

856110583172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16463665078 (or 16463665076 counting only the distinct ones).

The product of its (nonzero) digits is 403200, while the sum is 47.

The spelling of 856110583172 in words is "eight hundred fifty-six billion, one hundred ten million, five hundred eighty-three thousand, one hundred seventy-two".