2115645117 has 8 divisors (see below), whose sum is σ = 2969326560. Its totient is φ = 1336196880.

The previous prime is 2115645109. The next prime is 2115645139. The reversal of 2115645117 is 7115465112.

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

It is not a de Polignac number, because 2115645117 - 2³ = 2115645109 is a prime.

It is a super-2 number, since 2×2115645117² = 8951908522171887378, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2115645167) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18558234 + ... + 18558347.

It is an arithmetic number, because the mean of its divisors is an integer number (371165820).

Almost surely, 2^2115645117 is an apocalyptic number.

It is an amenable number.

2115645117 is a deficient number, since it is larger than the sum of its proper divisors (853681443).

2115645117 is a wasteful number, since it uses less digits than its factorization.

2115645117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37116603.

The product of its digits is 8400, while the sum is 33.

The square root of 2115645117 is about 45996.1424143373. The cubic root of 2115645117 is about 1283.7514288425.

The spelling of 2115645117 in words is "two billion, one hundred fifteen million, six hundred forty-five thousand, one hundred seventeen".