12615106112 has 56 divisors (see below), whose sum is σ = 28720840704. Its totient is φ = 5385388032.

The previous prime is 12615106103. The next prime is 12615106187. The reversal of 12615106112 is 21160151621.

It is a tau number, because it is divible by the number of its divisors (56).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 60353 + ... + 169919.

Almost surely, 2^12615106112 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12615106112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14360420352).

12615106112 is an abundant number, since it is smaller than the sum of its proper divisors (16105734592).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12615106112 is a wasteful number, since it uses less digits than its factorization.

12615106112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109843 (or 109833 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 26.

Adding to 12615106112 its reverse (21160151621), we get a palindrome (33775257733).

The spelling of 12615106112 in words is "twelve billion, six hundred fifteen million, one hundred six thousand, one hundred twelve".