32440000000 has 160 divisors (see below), whose sum is σ = 81120495456. Its totient is φ = 12960000000.

The previous prime is 32439999997. The next prime is 32440000007. The reversal of 32440000000 is 4423.

It is a tau number, because it is divible by the number of its divisors (160).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (32440000007) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39999595 + ... + 40000405.

Almost surely, 2^32440000000 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 32440000000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40560247728).

32440000000 is an abundant number, since it is smaller than the sum of its proper divisors (48680495456).

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

32440000000 is an frugal number, since it uses more digits than its factorization.

32440000000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 864 (or 818 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 13.

Adding to 32440000000 its reverse (4423), we get a palindrome (32440004423).

The spelling of 32440000000 in words is "thirty-two billion, four hundred forty million", and thus it is an aban number.