12805928508 has 72 divisors (see below), whose sum is σ = 31533739776. Its totient is φ = 4042881120.

The previous prime is 12805928501. The next prime is 12805928533. The reversal of 12805928508 is 80582950821.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12805928501) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 530191 + ... + 553817.

It is an arithmetic number, because the mean of its divisors is an integer number (437968608).

Almost surely, 2^12805928508 is an apocalyptic number.

It is an amenable number.

12805928508 is an abundant number, since it is smaller than the sum of its proper divisors (18727811268).

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

12805928508 is a wasteful number, since it uses less digits than its factorization.

12805928508 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23743 (or 23710 counting only the distinct ones).

The product of its (nonzero) digits is 460800, while the sum is 48.

The spelling of 12805928508 in words is "twelve billion, eight hundred five million, nine hundred twenty-eight thousand, five hundred eight".