20135134111 has 4 divisors (see below), whose sum is σ = 20149128000. Its totient is φ = 20121140224.

The previous prime is 20135134079. The next prime is 20135134127. The reversal of 20135134111 is 11143153102.

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 20135134111 - 2⁵ = 20135134079 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20135134141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6994786 + ... + 6997663.

It is an arithmetic number, because the mean of its divisors is an integer number (5037282000).

Almost surely, 2^20135134111 is an apocalyptic number.

20135134111 is a deficient number, since it is larger than the sum of its proper divisors (13993889).

20135134111 is a wasteful number, since it uses less digits than its factorization.

20135134111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13993888.

The product of its (nonzero) digits is 360, while the sum is 22.

Adding to 20135134111 its reverse (11143153102), we get a palindrome (31278287213).

The spelling of 20135134111 in words is "twenty billion, one hundred thirty-five million, one hundred thirty-four thousand, one hundred eleven".