12965102991 has 24 divisors (see below), whose sum is σ = 18931186560. Its totient is φ = 8549603136.

The previous prime is 12965102977. The next prime is 12965103001. The reversal of 12965102991 is 19920156921.

12965102991 is a `hidden beast` number, since 1 + 29 + 6 + 510 + 29 + 91 = 666.

12965102991 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a de Polignac number, because none of the positive numbers 2^k-12965102991 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12965102951) 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 23 ways as a sum of consecutive naturals, for example, 584581 + ... + 606353.

It is an arithmetic number, because the mean of its divisors is an integer number (788799440).

Almost surely, 2^12965102991 is an apocalyptic number.

12965102991 is a deficient number, since it is larger than the sum of its proper divisors (5966083569).

12965102991 is a wasteful number, since it uses less digits than its factorization.

12965102991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22495 (or 22492 counting only the distinct ones).

The product of its (nonzero) digits is 87480, while the sum is 45.

The spelling of 12965102991 in words is "twelve billion, nine hundred sixty-five million, one hundred two thousand, nine hundred ninety-one".