13240443277 has 2 divisors, whose sum is σ = 13240443278. Its totient is φ = 13240443276.

The previous prime is 13240443241. The next prime is 13240443289. The reversal of 13240443277 is 77234404231.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9109938916 + 4130504361 = 95446^2 + 64269^2 .

It is an emirp because it is prime and its reverse (77234404231) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13240443277 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13240440277) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6620221638 + 6620221639.

It is an arithmetic number, because the mean of its divisors is an integer number (6620221639).

Almost surely, 2^13240443277 is an apocalyptic number.

It is an amenable number.

13240443277 is a deficient number, since it is larger than the sum of its proper divisors (1).

13240443277 is an equidigital number, since it uses as much as digits as its factorization.

13240443277 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 112896, while the sum is 37.

The spelling of 13240443277 in words is "thirteen billion, two hundred forty million, four hundred forty-three thousand, two hundred seventy-seven".