14344366781 has 2 divisors, whose sum is σ = 14344366782. Its totient is φ = 14344366780.

The previous prime is 14344366753. The next prime is 14344366801. The reversal of 14344366781 is 18766344341.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7879402756 + 6464964025 = 88766^2 + 80405^2 .

It is a cyclic number.

It is not a de Polignac number, because 14344366781 - 2²² = 14340172477 is a prime.

It is a super-2 number, since 2×14344366781² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (14344366081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7172183390 + 7172183391.

It is an arithmetic number, because the mean of its divisors is an integer number (7172183391).

Almost surely, 2^14344366781 is an apocalyptic number.

It is an amenable number.

14344366781 is a deficient number, since it is larger than the sum of its proper divisors (1).

14344366781 is an equidigital number, since it uses as much as digits as its factorization.

14344366781 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1161216, while the sum is 47.

The spelling of 14344366781 in words is "fourteen billion, three hundred forty-four million, three hundred sixty-six thousand, seven hundred eighty-one".