136663543591 has 2 divisors, whose sum is σ = 136663543592. Its totient is φ = 136663543590.

The previous prime is 136663543561. The next prime is 136663543603. The reversal of 136663543591 is 195345366631.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 136663543591 - 2¹¹ = 136663541543 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (136663543561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68331771795 + 68331771796.

It is an arithmetic number, because the mean of its divisors is an integer number (68331771796).

Almost surely, 2^136663543591 is an apocalyptic number.

136663543591 is a deficient number, since it is larger than the sum of its proper divisors (1).

136663543591 is an equidigital number, since it uses as much as digits as its factorization.

136663543591 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5248800, while the sum is 52.

The spelling of 136663543591 in words is "one hundred thirty-six billion, six hundred sixty-three million, five hundred forty-three thousand, five hundred ninety-one".