11988118128 has 120 divisors (see below), whose sum is σ = 37187857920. Its totient is φ = 3314666880.

The previous prime is 11988118117. The next prime is 11988118151. The reversal of 11988118128 is 82181188911.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9298 + ... + 155121.

It is an arithmetic number, because the mean of its divisors is an integer number (309898816).

Almost surely, 2^11988118128 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 11988118128, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18593928960).

11988118128 is an abundant number, since it is smaller than the sum of its proper divisors (25199739792).

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

11988118128 is a wasteful number, since it uses less digits than its factorization.

11988118128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164475 (or 164462 counting only the distinct ones).

The product of its digits is 73728, while the sum is 48.

The spelling of 11988118128 in words is "eleven billion, nine hundred eighty-eight million, one hundred eighteen thousand, one hundred twenty-eight".