11155135523 has 32 divisors (see below), whose sum is σ = 13362585600. Its totient is φ = 9303971040.

The previous prime is 11155135517. The next prime is 11155135529. The reversal of 11155135523 is 32553155111.

11155135523 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (11155135517) and next prime (11155135529).

It is not a de Polignac number, because 11155135523 - 2²⁶ = 11088026659 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11155135523.

It is not an unprimeable number, because it can be changed into a prime (11155135529) 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 31 ways as a sum of consecutive naturals, for example, 2915990 + ... + 2919812.

It is an arithmetic number, because the mean of its divisors is an integer number (417580800).

Almost surely, 2^11155135523 is an apocalyptic number.

11155135523 is a deficient number, since it is larger than the sum of its proper divisors (2207450077).

11155135523 is an equidigital number, since it uses as much as digits as its factorization.

11155135523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4072 (or 4058 counting only the distinct ones).

The product of its digits is 11250, while the sum is 32.

The spelling of 11155135523 in words is "eleven billion, one hundred fifty-five million, one hundred thirty-five thousand, five hundred twenty-three".