243320345504 has 48 divisors (see below), whose sum is σ = 481690794816. Its totient is φ = 120988032000.

The previous prime is 243320345417. The next prime is 243320345509. The reversal of 243320345504 is 405543023342.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (243320345509) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4218749 + ... + 4276035.

It is an arithmetic number, because the mean of its divisors is an integer number (10035224892).

Almost surely, 2^243320345504 is an apocalyptic number.

It is an amenable number.

243320345504 is a deficient number, since it is larger than the sum of its proper divisors (238370449312).

243320345504 is a wasteful number, since it uses less digits than its factorization.

243320345504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58029 (or 58021 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 35.

Adding to 243320345504 its reverse (405543023342), we get a palindrome (648863368846).

The spelling of 243320345504 in words is "two hundred forty-three billion, three hundred twenty million, three hundred forty-five thousand, five hundred four".