2173722955 has 16 divisors (see below), whose sum is σ = 2655553824. Its totient is φ = 1707863040.

The previous prime is 2173722919. The next prime is 2173722961. The reversal of 2173722955 is 5592273712.

It is not a de Polignac number, because 2173722955 - 2²⁷ = 2039505227 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 46429 + ... + 80641.

It is an arithmetic number, because the mean of its divisors is an integer number (165972114).

Almost surely, 2^2173722955 is an apocalyptic number.

2173722955 is a deficient number, since it is larger than the sum of its proper divisors (481830869).

2173722955 is a wasteful number, since it uses less digits than its factorization.

2173722955 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34446.

The product of its digits is 264600, while the sum is 43.

The square root of 2173722955 is about 46623.2018956227. The cubic root of 2173722955 is about 1295.3925565130.

The spelling of 2173722955 in words is "two billion, one hundred seventy-three million, seven hundred twenty-two thousand, nine hundred fifty-five".