243223404400 has 30 divisors (see below), whose sum is σ = 584344230032. Its totient is φ = 97289361600.

The previous prime is 243223404383. The next prime is 243223404407. The reversal of 243223404400 is 4404322342.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243223404407) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 304028856 + ... + 304029655.

Almost surely, 2^243223404400 is an apocalyptic number.

243223404400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

243223404400 is an abundant number, since it is smaller than the sum of its proper divisors (341120825632).

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

243223404400 is a wasteful number, since it uses less digits than its factorization.

243223404400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 608058529 (or 608058518 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 28.

Adding to 243223404400 its reverse (4404322342), we get a palindrome (247627726742).

The spelling of 243223404400 in words is "two hundred forty-three billion, two hundred twenty-three million, four hundred four thousand, four hundred".