22531332432 has 160 divisors (see below), whose sum is σ = 70682976000. Its totient is φ = 6058401792.

The previous prime is 22531332409. The next prime is 22531332437. The reversal of 22531332432 is 23423313522.

It is a happy number.

It is a super-2 number, since 2×22531332432² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 22531332432.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22531332437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1643944 + ... + 1657592.

It is an arithmetic number, because the mean of its divisors is an integer number (441768600).

Almost surely, 2^22531332432 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 22531332432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35341488000).

22531332432 is an abundant number, since it is smaller than the sum of its proper divisors (48151643568).

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

22531332432 is a wasteful number, since it uses less digits than its factorization.

22531332432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13718 (or 13678 counting only the distinct ones).

The product of its digits is 25920, while the sum is 30.

Adding to 22531332432 its reverse (23423313522), we get a palindrome (45954645954).

The spelling of 22531332432 in words is "twenty-two billion, five hundred thirty-one million, three hundred thirty-two thousand, four hundred thirty-two".