6981910467839 has 2 divisors, whose sum is σ = 6981910467840. Its totient is φ = 6981910467838.

The previous prime is 6981910467811. The next prime is 6981910467901. The reversal of 6981910467839 is 9387640191896.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6981910467839 - 2⁸ = 6981910467583 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 (6981910464839) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3490955233919 + 3490955233920.

It is an arithmetic number, because the mean of its divisors is an integer number (3490955233920).

Almost surely, 2^{6981910467839} is an apocalyptic number.

6981910467839 is a deficient number, since it is larger than the sum of its proper divisors (1).

6981910467839 is an equidigital number, since it uses as much as digits as its factorization.

6981910467839 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 141087744, while the sum is 71.

The spelling of 6981910467839 in words is "six trillion, nine hundred eighty-one billion, nine hundred ten million, four hundred sixty-seven thousand, eight hundred thirty-nine".