172489675864 has 32 divisors (see below), whose sum is σ = 354225493440. Its totient is φ = 78092020000.

The previous prime is 172489675849. The next prime is 172489675877. The reversal of 172489675864 is 468576984271.

It is a self number, because there is not a number n which added to its sum of digits gives 172489675864.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3882514 + ... + 3926689.

It is an arithmetic number, because the mean of its divisors is an integer number (11069546670).

Almost surely, 2^172489675864 is an apocalyptic number.

It is an amenable number.

172489675864 is an abundant number, since it is smaller than the sum of its proper divisors (181735817576).

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

172489675864 is a wasteful number, since it uses less digits than its factorization.

172489675864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7809471 (or 7809467 counting only the distinct ones).

The product of its digits is 162570240, while the sum is 67.

The spelling of 172489675864 in words is "one hundred seventy-two billion, four hundred eighty-nine million, six hundred seventy-five thousand, eight hundred sixty-four".