2172656632 has 16 divisors (see below), whose sum is σ = 4077356400. Its totient is φ = 1085361600.

The previous prime is 2172656621. The next prime is 2172656641. The reversal of 2172656632 is 2366562712.

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, 111244 + ... + 129307.

It is an arithmetic number, because the mean of its divisors is an integer number (254834775).

Almost surely, 2^2172656632 is an apocalyptic number.

It is an amenable number.

2172656632 is a deficient number, since it is larger than the sum of its proper divisors (1904699768).

2172656632 is a wasteful number, since it uses less digits than its factorization.

2172656632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 241686 (or 241682 counting only the distinct ones).

The product of its digits is 181440, while the sum is 40.

The square root of 2172656632 is about 46611.7649526383. The cubic root of 2172656632 is about 1295.1807029581.

The spelling of 2172656632 in words is "two billion, one hundred seventy-two million, six hundred fifty-six thousand, six hundred thirty-two".