172064632173 has 16 divisors (see below), whose sum is σ = 262199831040. Its totient is φ = 98320357296.

The previous prime is 172064632151. The next prime is 172064632183. The reversal of 172064632173 is 371236460271.

It is not a de Polignac number, because 172064632173 - 2⁵ = 172064632141 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172064632183) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1307838 + ... + 1433376.

It is an arithmetic number, because the mean of its divisors is an integer number (16387489440).

Almost surely, 2^172064632173 is an apocalyptic number.

It is an amenable number.

172064632173 is a deficient number, since it is larger than the sum of its proper divisors (90135198867).

172064632173 is a wasteful number, since it uses less digits than its factorization.

172064632173 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 190816.

The product of its (nonzero) digits is 254016, while the sum is 42.

The spelling of 172064632173 in words is "one hundred seventy-two billion, sixty-four million, six hundred thirty-two thousand, one hundred seventy-three".