13366438991293 has 2 divisors, whose sum is σ = 13366438991294. Its totient is φ = 13366438991292.

The previous prime is 13366438991291. The next prime is 13366438991309. The reversal of 13366438991293 is 39219983466331.

13366438991293 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 can be written as a sum of positive squares in only one way, i.e., 13114552445604 + 251886545689 = 3621402^2 + 501883^2 .

It is an emirp because it is prime and its reverse (39219983466331) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13366438991293 - 2¹ = 13366438991291 is a prime.

Together with 13366438991291, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13366438991291) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6683219495646 + 6683219495647.

It is an arithmetic number, because the mean of its divisors is an integer number (6683219495647).

Almost surely, 2^{13366438991293} is an apocalyptic number.

It is an amenable number.

13366438991293 is a deficient number, since it is larger than the sum of its proper divisors (1).

13366438991293 is an equidigital number, since it uses as much as digits as its factorization.

13366438991293 is an evil number, because the sum of its binary digits is even.

The product of its digits is 136048896, while the sum is 67.

The spelling of 13366438991293 in words is "thirteen trillion, three hundred sixty-six billion, four hundred thirty-eight million, nine hundred ninety-one thousand, two hundred ninety-three".