909922172173 has 16 divisors (see below), whose sum is σ = 1047232000000. Its totient is φ = 774458297712.

The previous prime is 909922172167. The next prime is 909922172177. The reversal of 909922172173 is 371271229909.

It is a cyclic number.

It is not a de Polignac number, because 909922172173 - 2²⁵ = 909888617741 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 909922172173.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (909922172177) 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, 40588 + ... + 1349626.

It is an arithmetic number, because the mean of its divisors is an integer number (65452000000).

Almost surely, 2^909922172173 is an apocalyptic number.

It is an amenable number.

909922172173 is a deficient number, since it is larger than the sum of its proper divisors (137309827827).

909922172173 is a wasteful number, since it uses less digits than its factorization.

909922172173 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1309744.

The product of its (nonzero) digits is 857304, while the sum is 52.

The spelling of 909922172173 in words is "nine hundred nine billion, nine hundred twenty-two million, one hundred seventy-two thousand, one hundred seventy-three".