12255619688 has 64 divisors (see below), whose sum is σ = 25105626000. Its totient is φ = 5574868992.

The previous prime is 12255619679. The next prime is 12255619709. The reversal of 12255619688 is 88691655221.

It can be written as a sum of positive squares in 8 ways, for example, as 134050084 + 12121569604 = 11578^2 + 110098^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3117308 + ... + 3121236.

Almost surely, 2^12255619688 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 12255619688, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12552813000).

12255619688 is an abundant number, since it is smaller than the sum of its proper divisors (12850006312).

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

12255619688 is a wasteful number, since it uses less digits than its factorization.

12255619688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4374 (or 4370 counting only the distinct ones).

The product of its digits is 2073600, while the sum is 53.

The spelling of 12255619688 in words is "twelve billion, two hundred fifty-five million, six hundred nineteen thousand, six hundred eighty-eight".