11155561116 has 24 divisors (see below), whose sum is σ = 29748163200. Its totient is φ = 3187303152.

The previous prime is 11155561097. The next prime is 11155561117. The reversal of 11155561116 is 61116555111.

11155561116 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 2×11155561116² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11155561117) 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 7 ways as a sum of consecutive naturals, for example, 66402066 + ... + 66402233.

It is an arithmetic number, because the mean of its divisors is an integer number (1239506800).

Almost surely, 2^11155561116 is an apocalyptic number.

It is an amenable number.

11155561116 is an abundant number, since it is smaller than the sum of its proper divisors (18592602084).

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

11155561116 is a wasteful number, since it uses less digits than its factorization.

11155561116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132804313 (or 132804311 counting only the distinct ones).

The product of its digits is 4500, while the sum is 33.

The spelling of 11155561116 in words is "eleven billion, one hundred fifty-five million, five hundred sixty-one thousand, one hundred sixteen".