136611786791 has 2 divisors, whose sum is σ = 136611786792. Its totient is φ = 136611786790.

The previous prime is 136611786749. The next prime is 136611786811. The reversal of 136611786791 is 197687116631.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-136611786791 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (136611786491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68305893395 + 68305893396.

It is an arithmetic number, because the mean of its divisors is an integer number (68305893396).

Almost surely, 2^136611786791 is an apocalyptic number.

136611786791 is a deficient number, since it is larger than the sum of its proper divisors (1).

136611786791 is an equidigital number, since it uses as much as digits as its factorization.

136611786791 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2286144, while the sum is 56.

The spelling of 136611786791 in words is "one hundred thirty-six billion, six hundred eleven million, seven hundred eighty-six thousand, seven hundred ninety-one".