243243541504 has 44 divisors (see below), whose sum is σ = 489748025200. Its totient is φ = 120746723328.

The previous prime is 243243541487. The next prime is 243243541517. The reversal of 243243541504 is 405145342342.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 712134 + ... + 996805.

Almost surely, 2^243243541504 is an apocalyptic number.

It is an amenable number.

243243541504 is an abundant number, since it is smaller than the sum of its proper divisors (246504483696).

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

243243541504 is a wasteful number, since it uses less digits than its factorization.

243243541504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1709098 (or 1709080 counting only the distinct ones).

The product of its (nonzero) digits is 230400, while the sum is 37.

Adding to 243243541504 its reverse (405145342342), we get a palindrome (648388883846).

The spelling of 243243541504 in words is "two hundred forty-three billion, two hundred forty-three million, five hundred forty-one thousand, five hundred four".