12115840513 has 32 divisors (see below), whose sum is σ = 14388568064. Its totient is φ = 9985876992.

The previous prime is 12115840493. The next prime is 12115840559. The reversal of 12115840513 is 31504851121.

It is not a de Polignac number, because 12115840513 - 2²⁹ = 11578969601 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12115840213) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11084395 + ... + 11085487.

It is an arithmetic number, because the mean of its divisors is an integer number (449642752).

Almost surely, 2^12115840513 is an apocalyptic number.

It is an amenable number.

12115840513 is a deficient number, since it is larger than the sum of its proper divisors (2272727551).

12115840513 is a wasteful number, since it uses less digits than its factorization.

12115840513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1601.

The product of its (nonzero) digits is 4800, while the sum is 31.

The spelling of 12115840513 in words is "twelve billion, one hundred fifteen million, eight hundred forty thousand, five hundred thirteen".