12976389648 has 80 divisors (see below), whose sum is σ = 38531462400. Its totient is φ = 4176305280.

The previous prime is 12976389589. The next prime is 12976389649. The reversal of 12976389648 is 84698367921.

12976389648 is a `hidden beast` number, since 129 + 76 + 389 + 64 + 8 = 666.

12976389648 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (12976389649) by changing a digit.

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 in 15 ways as a sum of consecutive naturals, for example, 505368 + ... + 530423.

It is an arithmetic number, because the mean of its divisors is an integer number (481643280).

Almost surely, 2^12976389648 is an apocalyptic number.

12976389648 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

12976389648 is an abundant number, since it is smaller than the sum of its proper divisors (25555072752).

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

12976389648 is a wasteful number, since it uses less digits than its factorization.

12976389648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1035837 (or 1035825 counting only the distinct ones).

The product of its digits is 31352832, while the sum is 63.

The spelling of 12976389648 in words is "twelve billion, nine hundred seventy-six million, three hundred eighty-nine thousand, six hundred forty-eight".