243440040344 has 16 divisors (see below), whose sum is σ = 456501261120. Its totient is φ = 121706370720.

The previous prime is 243440040343. The next prime is 243440040367. The reversal of 243440040344 is 443040044342.

It is a self number, because there is not a number n which added to its sum of digits gives 243440040344.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243440040343) 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 3 ways as a sum of consecutive naturals, for example, 1630184 + ... + 1773239.

It is an arithmetic number, because the mean of its divisors is an integer number (28531328820).

Almost surely, 2^243440040344 is an apocalyptic number.

It is an amenable number.

243440040344 is a deficient number, since it is larger than the sum of its proper divisors (213061220776).

243440040344 is a wasteful number, since it uses less digits than its factorization.

243440040344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3412370 (or 3412366 counting only the distinct ones).

The product of its (nonzero) digits is 73728, while the sum is 32.

Adding to 243440040344 its reverse (443040044342), we get a palindrome (686480084686).

The spelling of 243440040344 in words is "two hundred forty-three billion, four hundred forty million, forty thousand, three hundred forty-four".