11155132240 has 120 divisors (see below), whose sum is σ = 30872175840. Its totient is φ = 3735615744.

The previous prime is 11155132223. The next prime is 11155132253. The reversal of 11155132240 is 4223155111.

11155132240 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

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 23 ways as a sum of consecutive naturals, for example, 135471 + ... + 201649.

It is an arithmetic number, because the mean of its divisors is an integer number (257268132).

Almost surely, 2^11155132240 is an apocalyptic number.

11155132240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11155132240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15436087920).

11155132240 is an abundant number, since it is smaller than the sum of its proper divisors (19717043600).

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

11155132240 is a wasteful number, since it uses less digits than its factorization.

11155132240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66249 (or 66236 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 25.

Adding to 11155132240 its reverse (4223155111), we get a palindrome (15378287351).

The spelling of 11155132240 in words is "eleven billion, one hundred fifty-five million, one hundred thirty-two thousand, two hundred forty".