12928868724 has 12 divisors (see below), whose sum is σ = 30167360384. Its totient is φ = 4309622904.

The previous prime is 12928868723. The next prime is 12928868741. The reversal of 12928868724 is 42786882921.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12928868723) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 538702852 + ... + 538702875.

Almost surely, 2^12928868724 is an apocalyptic number.

It is an amenable number.

12928868724 is an abundant number, since it is smaller than the sum of its proper divisors (17238491660).

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

12928868724 is a wasteful number, since it uses less digits than its factorization.

12928868724 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1077405734 (or 1077405732 counting only the distinct ones).

The product of its digits is 6193152, while the sum is 57.

The spelling of 12928868724 in words is "twelve billion, nine hundred twenty-eight million, eight hundred sixty-eight thousand, seven hundred twenty-four".