172150106885 has 4 divisors (see below), whose sum is σ = 206580128268. Its totient is φ = 137720085504.

The previous prime is 172150106873. The next prime is 172150106893. The reversal of 172150106885 is 588601051271.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 588601051271 = 227 ⋅2592956173.

It can be written as a sum of positive squares in 2 ways, for example, as 74595080641 + 97555026244 = 273121^2 + 312338^2 .

It is a cyclic number.

It is not a de Polignac number, because 172150106885 - 2³⁴ = 154970237701 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17215010684 + ... + 17215010693.

It is an arithmetic number, because the mean of its divisors is an integer number (51645032067).

Almost surely, 2^172150106885 is an apocalyptic number.

It is an amenable number.

172150106885 is a deficient number, since it is larger than the sum of its proper divisors (34430021383).

172150106885 is an equidigital number, since it uses as much as digits as its factorization.

172150106885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34430021382.

The product of its (nonzero) digits is 134400, while the sum is 44.

The spelling of 172150106885 in words is "one hundred seventy-two billion, one hundred fifty million, one hundred six thousand, eight hundred eighty-five".