85167407191 has 4 divisors (see below), whose sum is σ = 85169848384. Its totient is φ = 85164966000.

The previous prime is 85167407159. The next prime is 85167407231. The reversal of 85167407191 is 19170476158.

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 85167407191 - 2⁵ = 85167407159 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 (85167407111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1167495 + ... + 1238296.

It is an arithmetic number, because the mean of its divisors is an integer number (21292462096).

Almost surely, 2^85167407191 is an apocalyptic number.

85167407191 is a deficient number, since it is larger than the sum of its proper divisors (2441193).

85167407191 is a wasteful number, since it uses less digits than its factorization.

85167407191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2441192.

The product of its (nonzero) digits is 423360, while the sum is 49.

The spelling of 85167407191 in words is "eighty-five billion, one hundred sixty-seven million, four hundred seven thousand, one hundred ninety-one".