2113517515 has 16 divisors (see below), whose sum is σ = 2621394432. Its totient is φ = 1634615424.

The previous prime is 2113517513. The next prime is 2113517519. The reversal of 2113517515 is 5157153112.

It is a cyclic number.

It is not a de Polignac number, because 2113517515 - 2¹ = 2113517513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2113517513) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7339 + ... + 65428.

It is an arithmetic number, because the mean of its divisors is an integer number (163837152).

Almost surely, 2^2113517515 is an apocalyptic number.

2113517515 is a deficient number, since it is larger than the sum of its proper divisors (507876917).

2113517515 is a wasteful number, since it uses less digits than its factorization.

2113517515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72966.

The product of its digits is 5250, while the sum is 31.

The square root of 2113517515 is about 45973.0085484951. The cubic root of 2113517515 is about 1283.3209489257.

The spelling of 2113517515 in words is "two billion, one hundred thirteen million, five hundred seventeen thousand, five hundred fifteen".