135955889911 has 2 divisors, whose sum is σ = 135955889912. Its totient is φ = 135955889910.

The previous prime is 135955889887. The next prime is 135955889921. The reversal of 135955889911 is 119988559531.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-135955889911 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (135955889921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67977944955 + 67977944956.

It is an arithmetic number, because the mean of its divisors is an integer number (67977944956).

Almost surely, 2^135955889911 is an apocalyptic number.

135955889911 is a deficient number, since it is larger than the sum of its proper divisors (1).

135955889911 is an equidigital number, since it uses as much as digits as its factorization.

135955889911 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17496000, while the sum is 64.

The spelling of 135955889911 in words is "one hundred thirty-five billion, nine hundred fifty-five million, eight hundred eighty-nine thousand, nine hundred eleven".