80171087839 has 4 divisors (see below), whose sum is σ = 80171710200. Its totient is φ = 80170465480.

The previous prime is 80171087819. The next prime is 80171087873. The reversal of 80171087839 is 93878017108.

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 is a cyclic number.

It is not a de Polignac number, because 80171087839 - 2⁵ = 80171087807 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 (80171087819) 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, 38032 + ... + 402229.

It is an arithmetic number, because the mean of its divisors is an integer number (20042927550).

Almost surely, 2^80171087839 is an apocalyptic number.

80171087839 is a deficient number, since it is larger than the sum of its proper divisors (622361).

80171087839 is a wasteful number, since it uses less digits than its factorization.

80171087839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 622360.

The product of its (nonzero) digits is 677376, while the sum is 52.

The spelling of 80171087839 in words is "eighty billion, one hundred seventy-one million, eighty-seven thousand, eight hundred thirty-nine".