243440350401 has 16 divisors (see below), whose sum is σ = 327275368448. Its totient is φ = 160952994000.

The previous prime is 243440350397. The next prime is 243440350409. The reversal of 243440350401 is 104053044342.

243440350401 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 243440350401 - 2² = 243440350397 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (243440350409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 167695 + ... + 717636.

It is an arithmetic number, because the mean of its divisors is an integer number (20454710528).

Almost surely, 2^243440350401 is an apocalyptic number.

It is an amenable number.

243440350401 is a deficient number, since it is larger than the sum of its proper divisors (83835018047).

243440350401 is a wasteful number, since it uses less digits than its factorization.

243440350401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 886092.

The product of its (nonzero) digits is 23040, while the sum is 30.

Adding to 243440350401 its reverse (104053044342), we get a palindrome (347493394743).

The spelling of 243440350401 in words is "two hundred forty-three billion, four hundred forty million, three hundred fifty thousand, four hundred one".