12132811915 has 16 divisors (see below), whose sum is σ = 16887635712. Its totient is φ = 8195467104.

The previous prime is 12132811913. The next prime is 12132811937. The reversal of 12132811915 is 51911823121.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 12132811915 - 2¹ = 12132811913 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12132811913) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2584609 + ... + 2589298.

It is an arithmetic number, because the mean of its divisors is an integer number (1055477232).

Almost surely, 2^12132811915 is an apocalyptic number.

12132811915 is a deficient number, since it is larger than the sum of its proper divisors (4754823797).

12132811915 is an equidigital number, since it uses as much as digits as its factorization.

12132811915 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5173986.

The product of its digits is 4320, while the sum is 34.

The spelling of 12132811915 in words is "twelve billion, one hundred thirty-two million, eight hundred eleven thousand, nine hundred fifteen".