243450204201 has 24 divisors (see below), whose sum is σ = 366961795200. Its totient is φ = 155234150016.

The previous prime is 243450204181. The next prime is 243450204211. The reversal of 243450204201 is 102402054342.

243450204201 is a `hidden beast` number, since 2 + 4 + 3 + 450 + 2 + 0 + 4 + 201 = 666.

It is not a de Polignac number, because 243450204201 - 2⁵ = 243450204169 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (243450204211) 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, 5246500 + ... + 5292698.

It is an arithmetic number, because the mean of its divisors is an integer number (15290074800).

Almost surely, 2^243450204201 is an apocalyptic number.

It is an amenable number.

243450204201 is a deficient number, since it is larger than the sum of its proper divisors (123511590999).

243450204201 is a wasteful number, since it uses less digits than its factorization.

243450204201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71685 (or 71682 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 27.

Adding to 243450204201 its reverse (102402054342), we get a palindrome (345852258543).

The spelling of 243450204201 in words is "two hundred forty-three billion, four hundred fifty million, two hundred four thousand, two hundred one".