168089232589 has 8 divisors (see below), whose sum is σ = 178078393080. Its totient is φ = 158111356416.

The previous prime is 168089232583. The next prime is 168089232601. The reversal of 168089232589 is 985232980861.

It can be written as a sum of positive squares in 4 ways, for example, as 12287722500 + 155801510089 = 110850^2 + 394717^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 168089232589 - 2³¹ = 165941748941 is a prime.

It is a super-2 number, since 2×168089232589² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (168089232583) 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, 2790394 + ... + 2849995.

It is an arithmetic number, because the mean of its divisors is an integer number (22259799135).

Almost surely, 2^168089232589 is an apocalyptic number.

It is an amenable number.

168089232589 is a deficient number, since it is larger than the sum of its proper divisors (9989160491).

168089232589 is a wasteful number, since it uses less digits than its factorization.

168089232589 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5642159.

The product of its (nonzero) digits is 14929920, while the sum is 61.

It can be divided in two parts, 1680892 and 32589, that added together give a square (1713481 = 1309²).

The spelling of 168089232589 in words is "one hundred sixty-eight billion, eighty-nine million, two hundred thirty-two thousand, five hundred eighty-nine".