86171239436 has 6 divisors (see below), whose sum is σ = 150799669020. Its totient is φ = 43085619716.

The previous prime is 86171239417. The next prime is 86171239477. The reversal of 86171239436 is 63493217168.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10771404926 + ... + 10771404933.

It is an arithmetic number, because the mean of its divisors is an integer number (25133278170).

Almost surely, 2^86171239436 is an apocalyptic number.

It is an amenable number.

86171239436 is a deficient number, since it is larger than the sum of its proper divisors (64628429584).

86171239436 is a wasteful number, since it uses less digits than its factorization.

86171239436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21542809863 (or 21542809861 counting only the distinct ones).

The product of its digits is 1306368, while the sum is 50.

The spelling of 86171239436 in words is "eighty-six billion, one hundred seventy-one million, two hundred thirty-nine thousand, four hundred thirty-six".