85854537172 has 12 divisors (see below), whose sum is σ = 156777850656. Its totient is φ = 41060865560.

The previous prime is 85854537163. The next prime is 85854537187. The reversal of 85854537172 is 27173545858.

It is a happy number.

It is a congruent number.

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, 466600654 + ... + 466600837.

It is an arithmetic number, because the mean of its divisors is an integer number (13064820888).

Almost surely, 2^85854537172 is an apocalyptic number.

It is an amenable number.

85854537172 is a deficient number, since it is larger than the sum of its proper divisors (70923313484).

85854537172 is a wasteful number, since it uses less digits than its factorization.

85854537172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 933201518 (or 933201516 counting only the distinct ones).

The product of its digits is 9408000, while the sum is 55.

The spelling of 85854537172 in words is "eighty-five billion, eight hundred fifty-four million, five hundred thirty-seven thousand, one hundred seventy-two".