22143400344 has 96 divisors (see below), whose sum is σ = 64792116480. Its totient is φ = 6791496192.

The previous prime is 22143400327. The next prime is 22143400361. The reversal of 22143400344 is 44300434122.

It is a happy number.

22143400344 is a `hidden beast` number, since 2 + 214 + 3 + 400 + 3 + 44 = 666.

It is an interprime number because it is at equal distance from previous prime (22143400327) and next prime (22143400361).

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 255177 + ... + 330759.

It is an arithmetic number, because the mean of its divisors is an integer number (674917880).

Almost surely, 2^22143400344 is an apocalyptic number.

22143400344 is a gapful number since it is divisible by the number (24) 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 22143400344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32396058240).

22143400344 is an abundant number, since it is smaller than the sum of its proper divisors (42648716136).

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

22143400344 is a wasteful number, since it uses less digits than its factorization.

22143400344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75921 (or 75914 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 27.

Adding to 22143400344 its reverse (44300434122), we get a palindrome (66443834466).

The spelling of 22143400344 in words is "twenty-two billion, one hundred forty-three million, four hundred thousand, three hundred forty-four".