2665500115 has 16 divisors (see below), whose sum is σ = 3265593408. Its totient is φ = 2087902336.

The previous prime is 2665500109. The next prime is 2665500133. The reversal of 2665500115 is 5110055662.

It is a cyclic number.

It is not a de Polignac number, because 2665500115 - 2¹¹ = 2665498067 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 123297 + ... + 143293.

It is an arithmetic number, because the mean of its divisors is an integer number (204099588).

Almost surely, 2^2665500115 is an apocalyptic number.

2665500115 is a deficient number, since it is larger than the sum of its proper divisors (600093293).

2665500115 is a wasteful number, since it uses less digits than its factorization.

2665500115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20558.

The product of its (nonzero) digits is 9000, while the sum is 31.

The square root of 2665500115 is about 51628.4816259398. The cubic root of 2665500115 is about 1386.5203087704.

Adding to 2665500115 its reverse (5110055662), we get a palindrome (7775555777).

The spelling of 2665500115 in words is "two billion, six hundred sixty-five million, five hundred thousand, one hundred fifteen".