12747802446728 has 8 divisors (see below), whose sum is σ = 23902129587630. Its totient is φ = 6373901223360.

The previous prime is 12747802446727. The next prime is 12747802446733. The reversal of 12747802446728 is 82764420874721.

It can be written as a sum of positive squares in only one way, i.e., 12692247013924 + 55555432804 = 3562618^2 + 235702^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (12747802446727) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 796737652913 + ... + 796737652928.

Almost surely, 2^{12747802446728} is an apocalyptic number.

It is an amenable number.

12747802446728 is a deficient number, since it is larger than the sum of its proper divisors (11154327140902).

12747802446728 is a wasteful number, since it uses less digits than its factorization.

12747802446728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1593475305847 (or 1593475305843 counting only the distinct ones).

The product of its (nonzero) digits is 67436544, while the sum is 62.

The spelling of 12747802446728 in words is "twelve trillion, seven hundred forty-seven billion, eight hundred two million, four hundred forty-six thousand, seven hundred twenty-eight".