12720681263 has 2 divisors, whose sum is σ = 12720681264. Its totient is φ = 12720681262.

The previous prime is 12720681257. The next prime is 12720681269. The reversal of 12720681263 is 36218602721.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (12720681257) and next prime (12720681269).

It is a cyclic number.

It is not a de Polignac number, because 12720681263 - 2⁸ = 12720681007 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12720681269) 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, 6360340631 + 6360340632.

It is an arithmetic number, because the mean of its divisors is an integer number (6360340632).

Almost surely, 2^12720681263 is an apocalyptic number.

12720681263 is a deficient number, since it is larger than the sum of its proper divisors (1).

12720681263 is an equidigital number, since it uses as much as digits as its factorization.

12720681263 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48384, while the sum is 38.

The spelling of 12720681263 in words is "twelve billion, seven hundred twenty million, six hundred eighty-one thousand, two hundred sixty-three".