12089509432 has 128 divisors (see below), whose sum is σ = 30656908800. Its totient is φ = 4316198400.

The previous prime is 12089509391. The next prime is 12089509433. The reversal of 12089509432 is 23490598021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12089509433) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1107682 + ... + 1118542.

It is an arithmetic number, because the mean of its divisors is an integer number (239507100).

Almost surely, 2^12089509432 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 12089509432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15328454400).

12089509432 is an abundant number, since it is smaller than the sum of its proper divisors (18567399368).

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

12089509432 is a wasteful number, since it uses less digits than its factorization.

12089509432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11037 (or 11033 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 43.

The spelling of 12089509432 in words is "twelve billion, eighty-nine million, five hundred nine thousand, four hundred thirty-two".