11115717136888 has 128 divisors (see below), whose sum is σ = 25713442944000. Its totient is φ = 4386842966016.

The previous prime is 11115717136877. The next prime is 11115717136891. The reversal of 11115717136888 is 88863171751111.

It is a super-2 number, since 2×11115717136888² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 922536688 + ... + 922548736.

It is an arithmetic number, because the mean of its divisors is an integer number (200886273000).

Almost surely, 2^{11115717136888} 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 11115717136888, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12856721472000).

11115717136888 is an abundant number, since it is smaller than the sum of its proper divisors (14597725807112).

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

11115717136888 is a wasteful number, since it uses less digits than its factorization.

11115717136888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15021 (or 15017 counting only the distinct ones).

The product of its digits is 2257920, while the sum is 58.

Adding to 11115717136888 its reverse (88863171751111), we get a palindrome (99978888887999).

The spelling of 11115717136888 in words is "eleven trillion, one hundred fifteen billion, seven hundred seventeen million, one hundred thirty-six thousand, eight hundred eighty-eight".