243113522005 has 8 divisors (see below), whose sum is σ = 297240683832. Its totient is φ = 190821179328.

The previous prime is 243113521979. The next prime is 243113522011. The reversal of 243113522005 is 500225311342.

It can be written as a sum of positive squares in 4 ways, for example, as 24950729764 + 218162792241 = 157958^2 + 467079^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 243113522005 - 2¹⁹ = 243112997717 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 458704494 + ... + 458705023.

It is an arithmetic number, because the mean of its divisors is an integer number (37155085479).

Almost surely, 2^243113522005 is an apocalyptic number.

It is an amenable number.

243113522005 is a deficient number, since it is larger than the sum of its proper divisors (54127161827).

243113522005 is an equidigital number, since it uses as much as digits as its factorization.

243113522005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 917409575.

The product of its (nonzero) digits is 7200, while the sum is 28.

Adding to 243113522005 its reverse (500225311342), we get a palindrome (743338833347).

The spelling of 243113522005 in words is "two hundred forty-three billion, one hundred thirteen million, five hundred twenty-two thousand, five".