243345435505 has 8 divisors (see below), whose sum is σ = 292214678400. Its totient is φ = 194542911216.

The previous prime is 243345435503. The next prime is 243345435527. The reversal of 243345435505 is 505534543342.

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 243345435505 - 2¹ = 243345435503 is a prime.

It is a super-2 number, since 2×243345435505² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (243345435503) 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 7 ways as a sum of consecutive naturals, for example, 16671625 + ... + 16686214.

It is an arithmetic number, because the mean of its divisors is an integer number (36526834800).

Almost surely, 2^243345435505 is an apocalyptic number.

It is an amenable number.

243345435505 is a deficient number, since it is larger than the sum of its proper divisors (48869242895).

243345435505 is a wasteful number, since it uses less digits than its factorization.

243345435505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33359303.

The product of its (nonzero) digits is 2160000, while the sum is 43.

Adding to 243345435505 its reverse (505534543342), we get a palindrome (748879978847).

The spelling of 243345435505 in words is "two hundred forty-three billion, three hundred forty-five million, four hundred thirty-five thousand, five hundred five".