32440445532 has 144 divisors (see below), whose sum is σ = 90669196800. Its totient is φ = 9697754880.

The previous prime is 32440445509. The next prime is 32440445573. The reversal of 32440445532 is 23554404423.

32440445532 is a `hidden beast` number, since 3 + 24 + 40 + 44 + 553 + 2 = 666.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 21815293 + ... + 21816779.

It is an arithmetic number, because the mean of its divisors is an integer number (629647200).

Almost surely, 2^32440445532 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 32440445532, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (45334598400).

32440445532 is an abundant number, since it is smaller than the sum of its proper divisors (58228751268).

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

32440445532 is a wasteful number, since it uses less digits than its factorization.

32440445532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2216 (or 2211 counting only the distinct ones).

The product of its (nonzero) digits is 230400, while the sum is 36.

Adding to 32440445532 its reverse (23554404423), we get a palindrome (55994849955).

The spelling of 32440445532 in words is "thirty-two billion, four hundred forty million, four hundred forty-five thousand, five hundred thirty-two".