2152170656 has 24 divisors (see below), whose sum is σ = 4255765920. Its totient is φ = 1071341248.

The previous prime is 2152170653. The next prime is 2152170667. The reversal of 2152170656 is 6560712512.

It is not an unprimeable number, because it can be changed into a prime (2152170653) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 140876 + ... + 155403.

It is an arithmetic number, because the mean of its divisors is an integer number (177323580).

Almost surely, 2^2152170656 is an apocalyptic number.

It is an amenable number.

2152170656 is a deficient number, since it is larger than the sum of its proper divisors (2103595264).

2152170656 is a wasteful number, since it uses less digits than its factorization.

2152170656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 296516 (or 296508 counting only the distinct ones).

The product of its (nonzero) digits is 25200, while the sum is 35.

The square root of 2152170656 is about 46391.4933581578. The cubic root of 2152170656 is about 1291.0970888633.

The spelling of 2152170656 in words is "two billion, one hundred fifty-two million, one hundred seventy thousand, six hundred fifty-six".