12996806891 has 2 divisors, whose sum is σ = 12996806892. Its totient is φ = 12996806890.

The previous prime is 12996806843. The next prime is 12996806941. The reversal of 12996806891 is 19860869921.

12996806891 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12996806891 - 2³⁰ = 11923065067 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12996806891.

It is not a weakly prime, because it can be changed into another prime (12996806491) 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 as a sum of consecutive naturals, namely, 6498403445 + 6498403446.

It is an arithmetic number, because the mean of its divisors is an integer number (6498403446).

Almost surely, 2^12996806891 is an apocalyptic number.

12996806891 is a deficient number, since it is larger than the sum of its proper divisors (1).

12996806891 is an equidigital number, since it uses as much as digits as its factorization.

12996806891 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3359232, while the sum is 59.

The spelling of 12996806891 in words is "twelve billion, nine hundred ninety-six million, eight hundred six thousand, eight hundred ninety-one".