12689330768 has 10 divisors (see below), whose sum is σ = 24585578394. Its totient is φ = 6344665376.

The previous prime is 12689330663. The next prime is 12689330779. The reversal of 12689330768 is 86703398621.

12689330768 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 9214464064 + 3474866704 = 95992^2 + 58948^2 .

It is a super-2 number, since 2×12689330768² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 396541571 + ... + 396541602.

Almost surely, 2^12689330768 is an apocalyptic number.

It is an amenable number.

12689330768 is a deficient number, since it is larger than the sum of its proper divisors (11896247626).

12689330768 is an equidigital number, since it uses as much as digits as its factorization.

12689330768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 793083181 (or 793083175 counting only the distinct ones).

The product of its (nonzero) digits is 2612736, while the sum is 53.

The spelling of 12689330768 in words is "twelve billion, six hundred eighty-nine million, three hundred thirty thousand, seven hundred sixty-eight".