12756104591 has 2 divisors, whose sum is σ = 12756104592. Its totient is φ = 12756104590.

The previous prime is 12756104587. The next prime is 12756104639. The reversal of 12756104591 is 19540165721.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12756104591 - 2² = 12756104587 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12756104191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6378052295 + 6378052296.

It is an arithmetic number, because the mean of its divisors is an integer number (6378052296).

Almost surely, 2^12756104591 is an apocalyptic number.

12756104591 is a deficient number, since it is larger than the sum of its proper divisors (1).

12756104591 is an equidigital number, since it uses as much as digits as its factorization.

12756104591 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 75600, while the sum is 41.

The spelling of 12756104591 in words is "twelve billion, seven hundred fifty-six million, one hundred four thousand, five hundred ninety-one".