11598009012 has 72 divisors (see below), whose sum is σ = 29753680320. Its totient is φ = 3808759680.

The previous prime is 11598009001. The next prime is 11598009019. The reversal of 11598009012 is 21090089511.

11598009012 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 2×11598009012² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11598009019) 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 23 ways as a sum of consecutive naturals, for example, 900337 + ... + 913127.

It is an arithmetic number, because the mean of its divisors is an integer number (413245560).

Almost surely, 2^11598009012 is an apocalyptic number.

11598009012 is a gapful number since it is divisible by the number (12) 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 11598009012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14876840160).

11598009012 is an abundant number, since it is smaller than the sum of its proper divisors (18155671308).

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

11598009012 is a wasteful number, since it uses less digits than its factorization.

11598009012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13173 (or 13168 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 36.

The spelling of 11598009012 in words is "eleven billion, five hundred ninety-eight million, nine thousand, twelve".