2166361117 has 8 divisors (see below), whose sum is σ = 2190977024. Its totient is φ = 2141883648.

The previous prime is 2166361091. The next prime is 2166361121. The reversal of 2166361117 is 7111636612.

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

It is a cyclic number.

It is not a de Polignac number, because 2166361117 - 2²⁷ = 2032143389 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2166361217) 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, 2973 + ... + 65890.

It is an arithmetic number, because the mean of its divisors is an integer number (273872128).

Almost surely, 2^2166361117 is an apocalyptic number.

It is an amenable number.

2166361117 is a deficient number, since it is larger than the sum of its proper divisors (24615907).

2166361117 is a wasteful number, since it uses less digits than its factorization.

2166361117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69219.

The product of its digits is 9072, while the sum is 34.

The square root of 2166361117 is about 46544.1845669252. The cubic root of 2166361117 is about 1293.9285158631.

Adding to 2166361117 its reverse (7111636612), we get a palindrome (9277997729).

The spelling of 2166361117 in words is "two billion, one hundred sixty-six million, three hundred sixty-one thousand, one hundred seventeen".