86171305765 has 16 divisors (see below), whose sum is σ = 108391098816. Its totient is φ = 65691561600.

The previous prime is 86171305711. The next prime is 86171305783. The reversal of 86171305765 is 56750317168.

It is not a de Polignac number, because 86171305765 - 2¹⁵ = 86171272997 is a prime.

It is a Duffinian number.

It is a congruent number.

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, 4878951 + ... + 4896580.

It is an arithmetic number, because the mean of its divisors is an integer number (6774443676).

Almost surely, 2^86171305765 is an apocalyptic number.

It is an amenable number.

86171305765 is a deficient number, since it is larger than the sum of its proper divisors (22219793051).

86171305765 is a wasteful number, since it uses less digits than its factorization.

86171305765 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9775620.

The product of its (nonzero) digits is 1058400, while the sum is 49.

The spelling of 86171305765 in words is "eighty-six billion, one hundred seventy-one million, three hundred five thousand, seven hundred sixty-five".