13449965821093 has 2 divisors, whose sum is σ = 13449965821094. Its totient is φ = 13449965821092.

The previous prime is 13449965821087. The next prime is 13449965821177. The reversal of 13449965821093 is 39012856994431.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13231093426849 + 218872394244 = 3637457^2 + 467838^2 .

It is a cyclic number.

It is not a de Polignac number, because 13449965821093 - 2⁹ = 13449965820581 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13449965821013) 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, 6724982910546 + 6724982910547.

It is an arithmetic number, because the mean of its divisors is an integer number (6724982910547).

Almost surely, 2^{13449965821093} is an apocalyptic number.

It is an amenable number.

13449965821093 is a deficient number, since it is larger than the sum of its proper divisors (1).

13449965821093 is an equidigital number, since it uses as much as digits as its factorization.

13449965821093 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 50388480, while the sum is 64.

The spelling of 13449965821093 in words is "thirteen trillion, four hundred forty-nine billion, nine hundred sixty-five million, eight hundred twenty-one thousand, ninety-three".