243322333540 has 192 divisors, whose sum is σ = 616649241600. Its totient is φ = 79481064960.

The previous prime is 243322333481. The next prime is 243322333547. The reversal of 243322333540 is 45333223342.

It is a junction number, because it is equal to n+sod(n) for n = 243322333496 and 243322333505.

It is not an unprimeable number, because it can be changed into a prime (243322333547) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 15896811 + ... + 15912109.

It is an arithmetic number, because the mean of its divisors is an integer number (3211714800).

Almost surely, 2^243322333540 is an apocalyptic number.

243322333540 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 243322333540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (308324620800).

243322333540 is an abundant number, since it is smaller than the sum of its proper divisors (373326908060).

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

243322333540 is a wasteful number, since it uses less digits than its factorization.

243322333540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15482 (or 15480 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 34.

Adding to 243322333540 its reverse (45333223342), we get a palindrome (288655556882).

The spelling of 243322333540 in words is "two hundred forty-three billion, three hundred twenty-two million, three hundred thirty-three thousand, five hundred forty".