2660115321 has 12 divisors (see below), whose sum is σ = 3931747248. Its totient is φ = 1732167864.

The previous prime is 2660115287. The next prime is 2660115329. The reversal of 2660115321 is 1235110662.

2660115321 is a `hidden beast` number, since 2 + 6 + 601 + 1 + 53 + 2 + 1 = 666.

It is not a de Polignac number, because 2660115321 - 2⁶ = 2660115257 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2660115329) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 3436455 + ... + 3437228.

It is an arithmetic number, because the mean of its divisors is an integer number (327645604).

Almost surely, 2^2660115321 is an apocalyptic number.

It is an amenable number.

2660115321 is a deficient number, since it is larger than the sum of its proper divisors (1271631927).

2660115321 is a wasteful number, since it uses less digits than its factorization.

2660115321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6873732 (or 6873729 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 2660115321 is about 51576.3058099356. The cubic root of 2660115321 is about 1385.5860051112.

Adding to 2660115321 its reverse (1235110662), we get a palindrome (3895225983).

The spelling of 2660115321 in words is "two billion, six hundred sixty million, one hundred fifteen thousand, three hundred twenty-one".