11155122636 has 288 divisors, whose sum is σ = 32763709440. Its totient is φ = 2938231296.

The previous prime is 11155122619. The next prime is 11155122691. The reversal of 11155122636 is 63622155111.

11155122636 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×11155122636² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 11155122597 and 11155122606.

It is an unprimeable number.

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 95 ways as a sum of consecutive naturals, for example, 56624890 + ... + 56625086.

It is an arithmetic number, because the mean of its divisors is an integer number (113762880).

Almost surely, 2^11155122636 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11155122636, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16381854720).

11155122636 is an abundant number, since it is smaller than the sum of its proper divisors (21608586804).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11155122636 is a wasteful number, since it uses less digits than its factorization.

11155122636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 373 (or 364 counting only the distinct ones).

The product of its digits is 10800, while the sum is 33.

Adding to 11155122636 its reverse (63622155111), we get a palindrome (74777277747).

The spelling of 11155122636 in words is "eleven billion, one hundred fifty-five million, one hundred twenty-two thousand, six hundred thirty-six".