12569908728 has 64 divisors (see below), whose sum is σ = 34318771200. Its totient is φ = 3813183360.

The previous prime is 12569908727. The next prime is 12569908801. The reversal of 12569908728 is 82780996521.

It is a happy number.

It is a super-3 number, since 3×12569908728³ (a number of 31 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12569908721) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 261568 + ... + 305871.

It is an arithmetic number, because the mean of its divisors is an integer number (536230800).

Almost surely, 2^12569908728 is an apocalyptic number.

It is an amenable number.

12569908728 is an abundant number, since it is smaller than the sum of its proper divisors (21748862472).

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

12569908728 is a wasteful number, since it uses less digits than its factorization.

12569908728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 567532 (or 567528 counting only the distinct ones).

The product of its (nonzero) digits is 4354560, while the sum is 57.

The spelling of 12569908728 in words is "twelve billion, five hundred sixty-nine million, nine hundred eight thousand, seven hundred twenty-eight".