2171616172 has 24 divisors (see below), whose sum is σ = 4364015040. Its totient is φ = 935145360.

The previous prime is 2171616169. The next prime is 2171616197. The reversal of 2171616172 is 2716161712.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1297978 + ... + 1299649.

It is an arithmetic number, because the mean of its divisors is an integer number (181833960).

Almost surely, 2^2171616172 is an apocalyptic number.

2171616172 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

2171616172 is an abundant number, since it is smaller than the sum of its proper divisors (2192398868).

2171616172 is a wasteful number, since it uses less digits than its factorization.

2171616172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2597661 (or 2597659 counting only the distinct ones).

The product of its digits is 7056, while the sum is 34.

The square root of 2171616172 is about 46600.6026999652. The cubic root of 2171616172 is about 1294.9739209528.

Adding to 2171616172 its reverse (2716161712), we get a palindrome (4887777884).

The spelling of 2171616172 in words is "two billion, one hundred seventy-one million, six hundred sixteen thousand, one hundred seventy-two".