22539430400000 has 624 divisors, whose sum is σ = 59552949367296. Its totient is φ = 8515584000000.

The previous prime is 22539430399961. The next prime is 22539430400027. The reversal of 22539430400000 is 403493522.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a self number, because there is not a number n which added to its sum of digits gives 22539430400000.

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, 17062399340 + ... + 17062400660.

Almost surely, 2^{22539430400000} is an apocalyptic number.

22539430400000 is a gapful number since it is divisible by the number (20) 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 22539430400000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29776474683648).

22539430400000 is an abundant number, since it is smaller than the sum of its proper divisors (37013518967296).

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

22539430400000 is an frugal number, since it uses more digits than its factorization.

22539430400000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1444 (or 1402 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 32.

Adding to 22539430400000 its reverse (403493522), we get a palindrome (22539833893522).

The spelling of 22539430400000 in words is "twenty-two trillion, five hundred thirty-nine billion, four hundred thirty million, four hundred thousand".