135435521054989 has 2 divisors, whose sum is σ = 135435521054990. Its totient is φ = 135435521054988.

The previous prime is 135435521054971. The next prime is 135435521055013. The reversal of 135435521054989 is 989450125534531.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 77939622468964 + 57495898586025 = 8828342^2 + 7582605^2 .

It is an emirp because it is prime and its reverse (989450125534531) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 135435521054989 - 2⁵ = 135435521054957 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 135435521054989.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (135435521054909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67717760527494 + 67717760527495.

It is an arithmetic number, because the mean of its divisors is an integer number (67717760527495).

Almost surely, 2^{135435521054989} is an apocalyptic number.

It is an amenable number.

135435521054989 is a deficient number, since it is larger than the sum of its proper divisors (1).

135435521054989 is an equidigital number, since it uses as much as digits as its factorization.

135435521054989 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 116640000, while the sum is 64.

The spelling of 135435521054989 in words is "one hundred thirty-five trillion, four hundred thirty-five billion, five hundred twenty-one million, fifty-four thousand, nine hundred eighty-nine".