12080520128 has 56 divisors (see below), whose sum is σ = 24731667072. Its totient is φ = 5850399744.

The previous prime is 12080520103. The next prime is 12080520139. The reversal of 12080520128 is 82102508021.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 12080520128.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 516626 + ... + 539502.

It is an arithmetic number, because the mean of its divisors is an integer number (441636912).

Almost surely, 2^12080520128 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 12080520128, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12365833536).

12080520128 is an abundant number, since it is smaller than the sum of its proper divisors (12651146944).

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

12080520128 is a wasteful number, since it uses less digits than its factorization.

12080520128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23149 (or 23139 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 29.

The spelling of 12080520128 in words is "twelve billion, eighty million, five hundred twenty thousand, one hundred twenty-eight".