12688000728484 has 27 divisors (see below), whose sum is σ = 22240202221377. Its totient is φ = 6333674062464.

The previous prime is 12688000728443. The next prime is 12688000728539. The reversal of 12688000728484 is 48482700088621.

The square root of 12688000728484 is 3562022.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 10731717364900 + 1956283363584 = 3275930^2 + 1398672^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 6290529844 + ... + 6290531860.

Almost surely, 2^{12688000728484} is an apocalyptic number.

12688000728484 is the 3562022-nd square number.

It is an amenable number.

12688000728484 is a deficient number, since it is larger than the sum of its proper divisors (9552201492893).

12688000728484 is an frugal number, since it uses more digits than its factorization.

12688000728484 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5804 (or 2902 counting only the distinct ones).

The product of its (nonzero) digits is 11010048, while the sum is 58.

The spelling of 12688000728484 in words is "twelve trillion, six hundred eighty-eight billion, seven hundred twenty-eight thousand, four hundred eighty-four".