135388069813 has 2 divisors, whose sum is σ = 135388069814. Its totient is φ = 135388069812.

The previous prime is 135388069801. The next prime is 135388069829. The reversal of 135388069813 is 318960883531.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 82166502609 + 53221567204 = 286647^2 + 230698^2 .

It is an emirp because it is prime and its reverse (318960883531) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 135388069813 - 2⁵ = 135388069781 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (135388061813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67694034906 + 67694034907.

It is an arithmetic number, because the mean of its divisors is an integer number (67694034907).

Almost surely, 2^135388069813 is an apocalyptic number.

It is an amenable number.

135388069813 is a deficient number, since it is larger than the sum of its proper divisors (1).

135388069813 is an equidigital number, since it uses as much as digits as its factorization.

135388069813 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3732480, while the sum is 55.

The spelling of 135388069813 in words is "one hundred thirty-five billion, three hundred eighty-eight million, sixty-nine thousand, eight hundred thirteen".