86171238863 has 4 divisors (see below), whose sum is σ = 87139455120. Its totient is φ = 85203022608.

The previous prime is 86171238833. The next prime is 86171238871. The reversal of 86171238863 is 36883217168.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 86171238863 - 2²⁴ = 86154461647 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 (86171238833) 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, 484107995 + ... + 484108172.

It is an arithmetic number, because the mean of its divisors is an integer number (21784863780).

Almost surely, 2^86171238863 is an apocalyptic number.

86171238863 is a deficient number, since it is larger than the sum of its proper divisors (968216257).

86171238863 is an equidigital number, since it uses as much as digits as its factorization.

86171238863 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 968216256.

The product of its digits is 2322432, while the sum is 53.

The spelling of 86171238863 in words is "eighty-six billion, one hundred seventy-one million, two hundred thirty-eight thousand, eight hundred sixty-three".