85172189024 has 48 divisors (see below), whose sum is σ = 184985881920. Its totient is φ = 38351447040.

The previous prime is 85172189023. The next prime is 85172189041. The reversal of 85172189024 is 42098127158.

It is a self number, because there is not a number n which added to its sum of digits gives 85172189024.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85172189023) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2479784 + ... + 2513895.

It is an arithmetic number, because the mean of its divisors is an integer number (3853872540).

Almost surely, 2^85172189024 is an apocalyptic number.

It is an amenable number.

85172189024 is an abundant number, since it is smaller than the sum of its proper divisors (99813692896).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

85172189024 is a wasteful number, since it uses less digits than its factorization.

85172189024 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4993743 (or 4993735 counting only the distinct ones).

The product of its (nonzero) digits is 322560, while the sum is 47.

The spelling of 85172189024 in words is "eighty-five billion, one hundred seventy-two million, one hundred eighty-nine thousand, twenty-four".