86171008901 has 4 divisors (see below), whose sum is σ = 86171608332. Its totient is φ = 86170409472.

The previous prime is 86171008897. The next prime is 86171008927. The reversal of 86171008901 is 10980017168.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 61083616801 + 25087392100 = 247151^2 + 158390^2 .

It is a cyclic number.

It is not a de Polignac number, because 86171008901 - 2² = 86171008897 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86171008991) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 59135 + ... + 419331.

It is an arithmetic number, because the mean of its divisors is an integer number (21542902083).

Almost surely, 2^86171008901 is an apocalyptic number.

It is an amenable number.

86171008901 is a deficient number, since it is larger than the sum of its proper divisors (599431).

86171008901 is a wasteful number, since it uses less digits than its factorization.

86171008901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 599430.

The product of its (nonzero) digits is 24192, while the sum is 41.

The spelling of 86171008901 in words is "eighty-six billion, one hundred seventy-one million, eight thousand, nine hundred one".