243213533247605 has 8 divisors (see below), whose sum is σ = 291910297392000. Its totient is φ = 194534788268176.

The previous prime is 243213533247599. The next prime is 243213533247631. The reversal of 243213533247605 is 506742335312342.

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 243213533247605 - 2⁴ = 243213533247589 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4504761545 + ... + 4504815534.

It is an arithmetic number, because the mean of its divisors is an integer number (36488787174000).

Almost surely, 2^{243213533247605} is an apocalyptic number.

It is an amenable number.

243213533247605 is a deficient number, since it is larger than the sum of its proper divisors (48696764144395).

243213533247605 is an equidigital number, since it uses as much as digits as its factorization.

243213533247605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9009582483.

The product of its (nonzero) digits is 10886400, while the sum is 50.

Adding to 243213533247605 its reverse (506742335312342), we get a palindrome (749955868559947).

The spelling of 243213533247605 in words is "two hundred forty-three trillion, two hundred thirteen billion, five hundred thirty-three million, two hundred forty-seven thousand, six hundred five".