6839905637791 has 2 divisors, whose sum is σ = 6839905637792. Its totient is φ = 6839905637790.

The previous prime is 6839905637779. The next prime is 6839905637797. The reversal of 6839905637791 is 1977365099386.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6839905637791 - 2¹¹ = 6839905635743 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6839905637797) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3419952818895 + 3419952818896.

It is an arithmetic number, because the mean of its divisors is an integer number (3419952818896).

Almost surely, 2^{6839905637791} is an apocalyptic number.

6839905637791 is a deficient number, since it is larger than the sum of its proper divisors (1).

6839905637791 is an equidigital number, since it uses as much as digits as its factorization.

6839905637791 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 462944160, while the sum is 73.

The spelling of 6839905637791 in words is "six trillion, eight hundred thirty-nine billion, nine hundred five million, six hundred thirty-seven thousand, seven hundred ninety-one".