243345435450 has 48 divisors (see below), whose sum is σ = 649919506656. Its totient is φ = 59900414400.

The previous prime is 243345435407. The next prime is 243345435451. The reversal of 243345435450 is 54534543342.

It is not an unprimeable number, because it can be changed into a prime (243345435451) 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 23 ways as a sum of consecutive naturals, for example, 62394316 + ... + 62398215.

It is an arithmetic number, because the mean of its divisors is an integer number (13539989722).

Almost surely, 2^243345435450 is an apocalyptic number.

243345435450 is an abundant number, since it is smaller than the sum of its proper divisors (406574071206).

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

243345435450 is a wasteful number, since it uses less digits than its factorization.

243345435450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124792559 (or 124792554 counting only the distinct ones).

The product of its (nonzero) digits is 1728000, while the sum is 42.

Adding to 243345435450 its reverse (54534543342), we get a palindrome (297879978792).

The spelling of 243345435450 in words is "two hundred forty-three billion, three hundred forty-five million, four hundred thirty-five thousand, four hundred fifty".