12800256724 has 6 divisors (see below), whose sum is σ = 22400449274. Its totient is φ = 6400128360.

The previous prime is 12800256713. The next prime is 12800256761. The reversal of 12800256724 is 42765200821.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 7450797124 + 5349459600 = 86318^2 + 73140^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1600032087 + ... + 1600032094.

Almost surely, 2^12800256724 is an apocalyptic number.

It is an amenable number.

12800256724 is a deficient number, since it is larger than the sum of its proper divisors (9600192550).

12800256724 is a wasteful number, since it uses less digits than its factorization.

12800256724 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3200064185 (or 3200064183 counting only the distinct ones).

The product of its (nonzero) digits is 53760, while the sum is 37.

The spelling of 12800256724 in words is "twelve billion, eight hundred million, two hundred fifty-six thousand, seven hundred twenty-four".