191533068611 has 2 divisors, whose sum is σ = 191533068612. Its totient is φ = 191533068610.

The previous prime is 191533068593. The next prime is 191533068647. The reversal of 191533068611 is 116860335191.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-191533068611 is a prime.

It is not a weakly prime, because it can be changed into another prime (191533068911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 95766534305 + 95766534306.

It is an arithmetic number, because the mean of its divisors is an integer number (95766534306).

Almost surely, 2^191533068611 is an apocalyptic number.

191533068611 is a deficient number, since it is larger than the sum of its proper divisors (1).

191533068611 is an equidigital number, since it uses as much as digits as its factorization.

191533068611 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 116640, while the sum is 44.

The spelling of 191533068611 in words is "one hundred ninety-one billion, five hundred thirty-three million, sixty-eight thousand, six hundred eleven".