86172427167 has 16 divisors (see below), whose sum is σ = 116854738560. Its totient is φ = 56469380000.

The previous prime is 86172427127. The next prime is 86172427169. The reversal of 86172427167 is 76172427168.

It is a cyclic number.

It is not a de Polignac number, because 86172427167 - 2²² = 86168232863 is a prime.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86172427169) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3238417 + ... + 3264917.

It is an arithmetic number, because the mean of its divisors is an integer number (7303421160).

Almost surely, 2^86172427167 is an apocalyptic number.

86172427167 is a deficient number, since it is larger than the sum of its proper divisors (30682311393).

86172427167 is a wasteful number, since it uses less digits than its factorization.

86172427167 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44934.

The product of its digits is 1580544, while the sum is 51.

Subtracting from 86172427167 its reverse (76172427168), we obtain a palindrome (9999999999).

The spelling of 86172427167 in words is "eighty-six billion, one hundred seventy-two million, four hundred twenty-seven thousand, one hundred sixty-seven".