22043431430400 has 432 divisors, whose sum is σ = 77546181171200. Its totient is φ = 5498367713280.

The previous prime is 22043431430359. The next prime is 22043431430429. The reversal of 22043431430400 is 403413434022.

It is a happy number.

It is a super-4 number, since 4×22043431430400⁴ (a number of 54 digits) contains 4444 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

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, 28436757 + ... + 29201643.

Almost surely, 2^{22043431430400} is an apocalyptic number.

22043431430400 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 22043431430400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38773090585600).

22043431430400 is an abundant number, since it is smaller than the sum of its proper divisors (55502749740800).

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

22043431430400 is a wasteful number, since it uses less digits than its factorization.

22043431430400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 765014 (or 764995 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 30.

Adding to 22043431430400 its reverse (403413434022), we get a palindrome (22446844864422).

The spelling of 22043431430400 in words is "twenty-two trillion, forty-three billion, four hundred thirty-one million, four hundred thirty thousand, four hundred".