2166117115 has 8 divisors (see below), whose sum is σ = 2712355488. Its totient is φ = 1657550400.

The previous prime is 2166117113. The next prime is 2166117119. The reversal of 2166117115 is 5117116612.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2166117115 - 2¹ = 2166117113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2166117113) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9417786 + ... + 9418015.

It is an arithmetic number, because the mean of its divisors is an integer number (339044436).

Almost surely, 2^2166117115 is an apocalyptic number.

2166117115 is a deficient number, since it is larger than the sum of its proper divisors (546238373).

2166117115 is a wasteful number, since it uses less digits than its factorization.

2166117115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18835829.

The product of its digits is 2520, while the sum is 31.

The square root of 2166117115 is about 46541.5633063609. The cubic root of 2166117115 is about 1293.8799347044.

The spelling of 2166117115 in words is "two billion, one hundred sixty-six million, one hundred seventeen thousand, one hundred fifteen".