22539439936 has 112 divisors (see below), whose sum is σ = 51081456384. Its totient is φ = 9775374336.

The previous prime is 22539439933. The next prime is 22539439939. The reversal of 22539439936 is 63993493522.

It is an interprime number because it is at equal distance from previous prime (22539439933) and next prime (22539439939).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22539439933) 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, 17297461 + ... + 17298763.

It is an arithmetic number, because the mean of its divisors is an integer number (456084432).

Almost surely, 2^22539439936 is an apocalyptic number.

22539439936 is a gapful number since it is divisible by the number (26) 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 22539439936, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25540728192).

22539439936 is an abundant number, since it is smaller than the sum of its proper divisors (28542016448).

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

22539439936 is a wasteful number, since it uses less digits than its factorization.

22539439936 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2568 (or 2558 counting only the distinct ones).

The product of its digits is 9447840, while the sum is 55.

The spelling of 22539439936 in words is "twenty-two billion, five hundred thirty-nine million, four hundred thirty-nine thousand, nine hundred thirty-six".