136546508489 has 2 divisors, whose sum is σ = 136546508490. Its totient is φ = 136546508488.

The previous prime is 136546508317. The next prime is 136546508513. The reversal of 136546508489 is 984805645631.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 95876929600 + 40669578889 = 309640^2 + 201667^2 .

It is a cyclic number.

It is not a de Polignac number, because 136546508489 - 2²⁸ = 136278073033 is a prime.

It is not a weakly prime, because it can be changed into another prime (136546508789) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68273254244 + 68273254245.

It is an arithmetic number, because the mean of its divisors is an integer number (68273254245).

Almost surely, 2^136546508489 is an apocalyptic number.

It is an amenable number.

136546508489 is a deficient number, since it is larger than the sum of its proper divisors (1).

136546508489 is an equidigital number, since it uses as much as digits as its factorization.

136546508489 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24883200, while the sum is 59.

The spelling of 136546508489 in words is "one hundred thirty-six billion, five hundred forty-six million, five hundred eight thousand, four hundred eighty-nine".