11599649388 has 60 divisors (see below), whose sum is σ = 30421543152. Its totient is φ = 3854083680.

The previous prime is 11599649381. The next prime is 11599649417. The reversal of 11599649388 is 88394699511.

11599649388 is a `hidden beast` number, since 1 + 1 + 59 + 96 + 493 + 8 + 8 = 666.

11599649388 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (11599649381) 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 19 ways as a sum of consecutive naturals, for example, 43206 + ... + 158322.

Almost surely, 2^11599649388 is an apocalyptic number.

11599649388 is a gapful number since it is divisible by the number (18) 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 11599649388, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15210771576).

11599649388 is an abundant number, since it is smaller than the sum of its proper divisors (18821893764).

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

11599649388 is a wasteful number, since it uses less digits than its factorization.

11599649388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115444 (or 115433 counting only the distinct ones).

The product of its digits is 16796160, while the sum is 63.

The spelling of 11599649388 in words is "eleven billion, five hundred ninety-nine million, six hundred forty-nine thousand, three hundred eighty-eight".