135523720589 has 2 divisors, whose sum is σ = 135523720590. Its totient is φ = 135523720588.

The previous prime is 135523720529. The next prime is 135523720601. The reversal of 135523720589 is 985027325531.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 133436784100 + 2086936489 = 365290^2 + 45683^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-135523720589 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (135523720529) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67761860294 + 67761860295.

It is an arithmetic number, because the mean of its divisors is an integer number (67761860295).

Almost surely, 2^135523720589 is an apocalyptic number.

It is an amenable number.

135523720589 is a deficient number, since it is larger than the sum of its proper divisors (1).

135523720589 is an equidigital number, since it uses as much as digits as its factorization.

135523720589 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2268000, while the sum is 50.

The spelling of 135523720589 in words is "one hundred thirty-five billion, five hundred twenty-three million, seven hundred twenty thousand, five hundred eighty-nine".