136363553612509 has 2 divisors, whose sum is σ = 136363553612510. Its totient is φ = 136363553612508.

The previous prime is 136363553612453. The next prime is 136363553612603. The reversal of 136363553612509 is 905216355363631.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 132843558505284 + 3519995107225 = 11525778^2 + 1876165^2 .

It is a cyclic number.

It is not a de Polignac number, because 136363553612509 - 2⁹ = 136363553611997 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (136363553612609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68181776806254 + 68181776806255.

It is an arithmetic number, because the mean of its divisors is an integer number (68181776806255).

Almost surely, 2^{136363553612509} is an apocalyptic number.

It is an amenable number.

136363553612509 is a deficient number, since it is larger than the sum of its proper divisors (1).

136363553612509 is an equidigital number, since it uses as much as digits as its factorization.

136363553612509 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 39366000, while the sum is 58.

The spelling of 136363553612509 in words is "one hundred thirty-six trillion, three hundred sixty-three billion, five hundred fifty-three million, six hundred twelve thousand, five hundred nine".