2115311516 has 24 divisors (see below), whose sum is σ = 3782856000. Its totient is φ = 1034523072.

The previous prime is 2115311467. The next prime is 2115311537. The reversal of 2115311516 is 6151135112.

It is a congruent 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 7 ways as a sum of consecutive naturals, for example, 514766 + ... + 518858.

It is an arithmetic number, because the mean of its divisors is an integer number (157619000).

Almost surely, 2^2115311516 is an apocalyptic number.

It is an amenable number.

2115311516 is a deficient number, since it is larger than the sum of its proper divisors (1667544484).

2115311516 is a wasteful number, since it uses less digits than its factorization.

2115311516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6893 (or 6891 counting only the distinct ones).

The product of its digits is 900, while the sum is 26.

The square root of 2115311516 is about 45992.5158694325. The cubic root of 2115311516 is about 1283.6839500912.

Adding to 2115311516 its reverse (6151135112), we get a palindrome (8266446628).

The spelling of 2115311516 in words is "two billion, one hundred fifteen million, three hundred eleven thousand, five hundred sixteen".