12626251291 has 2 divisors, whose sum is σ = 12626251292. Its totient is φ = 12626251290.

The previous prime is 12626251249. The next prime is 12626251387. The reversal of 12626251291 is 19215262621.

12626251291 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 12626251291 - 2¹⁷ = 12626120219 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12626251291.

It is not a weakly prime, because it can be changed into another prime (12626257291) 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, 6313125645 + 6313125646.

It is an arithmetic number, because the mean of its divisors is an integer number (6313125646).

Almost surely, 2^12626251291 is an apocalyptic number.

12626251291 is a deficient number, since it is larger than the sum of its proper divisors (1).

12626251291 is an equidigital number, since it uses as much as digits as its factorization.

12626251291 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 25920, while the sum is 37.

The spelling of 12626251291 in words is "twelve billion, six hundred twenty-six million, two hundred fifty-one thousand, two hundred ninety-one".