172489675865 has 32 divisors (see below), whose sum is σ = 229154438016. Its totient is φ = 123830576640.

The previous prime is 172489675849. The next prime is 172489675877. The reversal of 172489675865 is 568576984271.

It is not a de Polignac number, because 172489675865 - 2⁴ = 172489675849 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 172489675795 and 172489675804.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 639842 + ... + 868548.

It is an arithmetic number, because the mean of its divisors is an integer number (7161076188).

Almost surely, 2^172489675865 is an apocalyptic number.

It is an amenable number.

172489675865 is a deficient number, since it is larger than the sum of its proper divisors (56664762151).

172489675865 is a wasteful number, since it uses less digits than its factorization.

172489675865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 229049.

The product of its digits is 203212800, while the sum is 68.

The spelling of 172489675865 in words is "one hundred seventy-two billion, four hundred eighty-nine million, six hundred seventy-five thousand, eight hundred sixty-five".