135511423442111 has 4 divisors (see below), whose sum is σ = 136108390065432. Its totient is φ = 134914456818792.

The previous prime is 135511423442107. The next prime is 135511423442159. The reversal of 135511423442111 is 111244324115531.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 135511423442111 - 2² = 135511423442107 is a prime.

It is a super-2 number, since 2×135511423442111² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135511423442611) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 298483311320 + ... + 298483311773.

It is an arithmetic number, because the mean of its divisors is an integer number (34027097516358).

Almost surely, 2^{135511423442111} is an apocalyptic number.

135511423442111 is a deficient number, since it is larger than the sum of its proper divisors (596966623321).

135511423442111 is an equidigital number, since it uses as much as digits as its factorization.

135511423442111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 596966623320.

The product of its digits is 57600, while the sum is 38.

Adding to 135511423442111 its reverse (111244324115531), we get a palindrome (246755747557642).

The spelling of 135511423442111 in words is "one hundred thirty-five trillion, five hundred eleven billion, four hundred twenty-three million, four hundred forty-two thousand, one hundred eleven".