243513132345 has 24 divisors (see below), whose sum is σ = 482387919936. Its totient is φ = 111320288928.

The previous prime is 243513132329. The next prime is 243513132349. The reversal of 243513132345 is 543231315342.

243513132345 is a `hidden beast` number, since 2 + 4 + 3 + 513 + 132 + 3 + 4 + 5 = 666.

It is not a de Polignac number, because 243513132345 - 2⁴ = 243513132329 is a prime.

It is not an unprimeable number, because it can be changed into a prime (243513132349) 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, 386528467 + ... + 386529096.

It is an arithmetic number, because the mean of its divisors is an integer number (20099496664).

Almost surely, 2^243513132345 is an apocalyptic number.

It is an amenable number.

243513132345 is a deficient number, since it is larger than the sum of its proper divisors (238874787591).

243513132345 is a wasteful number, since it uses less digits than its factorization.

243513132345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 773057581 (or 773057578 counting only the distinct ones).

The product of its digits is 129600, while the sum is 36.

Adding to 243513132345 its reverse (543231315342), we get a palindrome (786744447687).

The spelling of 243513132345 in words is "two hundred forty-three billion, five hundred thirteen million, one hundred thirty-two thousand, three hundred forty-five".