2115717171 has 32 divisors (see below), whose sum is σ = 2970040320. Its totient is φ = 1337990400.

The previous prime is 2115717161. The next prime is 2115717181. The reversal of 2115717171 is 1717175112.

It is an interprime number because it is at equal distance from previous prime (2115717161) and next prime (2115717181).

It is not a de Polignac number, because 2115717171 - 2²⁵ = 2082162739 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2115717101) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1214361 + ... + 1216101.

It is an arithmetic number, because the mean of its divisors is an integer number (92813760).

Almost surely, 2^2115717171 is an apocalyptic number.

2115717171 is a deficient number, since it is larger than the sum of its proper divisors (854323149).

2115717171 is a wasteful number, since it uses less digits than its factorization.

2115717171 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2027.

The product of its digits is 3430, while the sum is 33.

The square root of 2115717171 is about 45996.9256690053. The cubic root of 2115717171 is about 1283.7660025494.

The spelling of 2115717171 in words is "two billion, one hundred fifteen million, seven hundred seventeen thousand, one hundred seventy-one".