243541640033 has 16 divisors (see below), whose sum is σ = 245992820736. Its totient is φ = 241103802960.

The previous prime is 243541640003. The next prime is 243541640087. The reversal of 243541640033 is 330046145342.

It is a cyclic number.

It is not a de Polignac number, because 243541640033 - 2¹⁰ = 243541639009 is a prime.

It is a super-3 number, since 3×243541640033³ (a number of 35 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 243541639975 and 243541640002.

It is not an unprimeable number, because it can be changed into a prime (243541640003) 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 15 ways as a sum of consecutive naturals, for example, 65980718 + ... + 65984408.

It is an arithmetic number, because the mean of its divisors is an integer number (15374551296).

Almost surely, 2^243541640033 is an apocalyptic number.

It is an amenable number.

243541640033 is a deficient number, since it is larger than the sum of its proper divisors (2451180703).

243541640033 is a wasteful number, since it uses less digits than its factorization.

243541640033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5324.

The product of its (nonzero) digits is 103680, while the sum is 35.

Adding to 243541640033 its reverse (330046145342), we get a palindrome (573587785375).

The spelling of 243541640033 in words is "two hundred forty-three billion, five hundred forty-one million, six hundred forty thousand, thirty-three".