86172516816 has 20 divisors (see below), whose sum is σ = 222612335232. Its totient is φ = 28724172256.

The previous prime is 86172516803. The next prime is 86172516863. The reversal of 86172516816 is 61861527168.

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, 897630336 + ... + 897630431.

Almost surely, 2^86172516816 is an apocalyptic number.

It is an amenable number.

86172516816 is an abundant number, since it is smaller than the sum of its proper divisors (136439818416).

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

86172516816 is a wasteful number, since it uses less digits than its factorization.

86172516816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1795260778 (or 1795260772 counting only the distinct ones).

The product of its digits is 967680, while the sum is 51.

The spelling of 86172516816 in words is "eighty-six billion, one hundred seventy-two million, five hundred sixteen thousand, eight hundred sixteen".