6945617743439 has 2 divisors, whose sum is σ = 6945617743440. Its totient is φ = 6945617743438.

The previous prime is 6945617743331. The next prime is 6945617743453. The reversal of 6945617743439 is 9343477165496.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6945617743439 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6945617743139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3472808871719 + 3472808871720.

It is an arithmetic number, because the mean of its divisors is an integer number (3472808871720).

Almost surely, 2^{6945617743439} is an apocalyptic number.

6945617743439 is a deficient number, since it is larger than the sum of its proper divisors (1).

6945617743439 is an equidigital number, since it uses as much as digits as its factorization.

6945617743439 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 411505920, while the sum is 68.

The spelling of 6945617743439 in words is "six trillion, nine hundred forty-five billion, six hundred seventeen million, seven hundred forty-three thousand, four hundred thirty-nine".