1344881681263 has 2 divisors, whose sum is σ = 1344881681264. Its totient is φ = 1344881681262.

The previous prime is 1344881681257. The next prime is 1344881681293. The reversal of 1344881681263 is 3621861884431.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1344881681263 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1344881681293) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 672440840631 + 672440840632.

It is an arithmetic number, because the mean of its divisors is an integer number (672440840632).

Almost surely, 2^{1344881681263} is an apocalyptic number.

1344881681263 is a deficient number, since it is larger than the sum of its proper divisors (1).

1344881681263 is an equidigital number, since it uses as much as digits as its factorization.

1344881681263 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5308416, while the sum is 55.

The spelling of 1344881681263 in words is "one trillion, three hundred forty-four billion, eight hundred eighty-one million, six hundred eighty-one thousand, two hundred sixty-three".