243332444013 has 4 divisors (see below), whose sum is σ = 324443258688. Its totient is φ = 162221629340.

The previous prime is 243332443997. The next prime is 243332444051. The reversal of 243332444013 is 310444233342.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 243332444013 - 2⁴ = 243332443997 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243332444083) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40555407333 + ... + 40555407338.

It is an arithmetic number, because the mean of its divisors is an integer number (81110814672).

Almost surely, 2^243332444013 is an apocalyptic number.

It is an amenable number.

243332444013 is a deficient number, since it is larger than the sum of its proper divisors (81110814675).

243332444013 is an equidigital number, since it uses as much as digits as its factorization.

243332444013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81110814674.

The product of its (nonzero) digits is 82944, while the sum is 33.

Adding to 243332444013 its reverse (310444233342), we get a palindrome (553776677355).

The spelling of 243332444013 in words is "two hundred forty-three billion, three hundred thirty-two million, four hundred forty-four thousand, thirteen".