13263766736249 has 2 divisors, whose sum is σ = 13263766736250. Its totient is φ = 13263766736248.

The previous prime is 13263766736219. The next prime is 13263766736287. The reversal of 13263766736249 is 94263766736231.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7557248412025 + 5706518324224 = 2749045^2 + 2388832^2 .

It is an emirp because it is prime and its reverse (94263766736231) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13263766736249 is a prime.

It is not a weakly prime, because it can be changed into another prime (13263766736219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6631883368124 + 6631883368125.

It is an arithmetic number, because the mean of its divisors is an integer number (6631883368125).

Almost surely, 2^{13263766736249} is an apocalyptic number.

It is an amenable number.

13263766736249 is a deficient number, since it is larger than the sum of its proper divisors (1).

13263766736249 is an equidigital number, since it uses as much as digits as its factorization.

13263766736249 is an evil number, because the sum of its binary digits is even.

The product of its digits is 246903552, while the sum is 65.

The spelling of 13263766736249 in words is "thirteen trillion, two hundred sixty-three billion, seven hundred sixty-six million, seven hundred thirty-six thousand, two hundred forty-nine".