13317944047937 has 2 divisors, whose sum is σ = 13317944047938. Its totient is φ = 13317944047936.

The previous prime is 13317944047841. The next prime is 13317944047939. The reversal of 13317944047937 is 73974044971331.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10062954350656 + 3254989697281 = 3172216^2 + 1804159^2 .

It is a cyclic number.

It is not a de Polignac number, because 13317944047937 - 2¹⁸ = 13317943785793 is a prime.

Together with 13317944047939, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 13317944047937.

It is not a weakly prime, because it can be changed into another prime (13317944047939) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6658972023968 + 6658972023969.

It is an arithmetic number, because the mean of its divisors is an integer number (6658972023969).

Almost surely, 2^{13317944047937} is an apocalyptic number.

It is an amenable number.

13317944047937 is a deficient number, since it is larger than the sum of its proper divisors (1).

13317944047937 is an equidigital number, since it uses as much as digits as its factorization.

13317944047937 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48009024, while the sum is 62.

The spelling of 13317944047937 in words is "thirteen trillion, three hundred seventeen billion, nine hundred forty-four million, forty-seven thousand, nine hundred thirty-seven".