6981335000191 has 2 divisors, whose sum is σ = 6981335000192. Its totient is φ = 6981335000190.

The previous prime is 6981335000099. The next prime is 6981335000207. The reversal of 6981335000191 is 1910005331896.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6981335000191 - 2⁷ = 6981335000063 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6981335000791) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3490667500095 + 3490667500096.

It is an arithmetic number, because the mean of its divisors is an integer number (3490667500096).

Almost surely, 2^{6981335000191} is an apocalyptic number.

6981335000191 is a deficient number, since it is larger than the sum of its proper divisors (1).

6981335000191 is an equidigital number, since it uses as much as digits as its factorization.

6981335000191 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 174960, while the sum is 46.

The spelling of 6981335000191 in words is "six trillion, nine hundred eighty-one billion, three hundred thirty-five million, one hundred ninety-one", and thus it is an aban number.