12808537344 has 432 divisors, whose sum is σ = 41234511360. Its totient is φ = 3917168640.

The previous prime is 12808537331. The next prime is 12808537373. The reversal of 12808537344 is 44373580821.

12808537344 is a `hidden beast` number, since 1 + 2 + 80 + 8 + 537 + 34 + 4 = 666.

It is a tau number, because it is divible by the number of its divisors (432).

It is a self number, because there is not a number n which added to its sum of digits gives 12808537344.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 113349832 + ... + 113349944.

Almost surely, 2^12808537344 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 12808537344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20617255680).

12808537344 is an abundant number, since it is smaller than the sum of its proper divisors (28425974016).

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

12808537344 is a wasteful number, since it uses less digits than its factorization.

12808537344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 215 (or 172 counting only the distinct ones).

The product of its (nonzero) digits is 645120, while the sum is 45.

The spelling of 12808537344 in words is "twelve billion, eight hundred eight million, five hundred thirty-seven thousand, three hundred forty-four".