243421145441 has 16 divisors (see below), whose sum is σ = 248044897920. Its totient is φ = 238818689280.

The previous prime is 243421145423. The next prime is 243421145479. The reversal of 243421145441 is 144541124342.

243421145441 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 243421145441 - 2¹⁴ = 243421129057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (243421145041) 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, 44039420 + ... + 44044946.

It is an arithmetic number, because the mean of its divisors is an integer number (15502806120).

Almost surely, 2^243421145441 is an apocalyptic number.

It is an amenable number.

243421145441 is a deficient number, since it is larger than the sum of its proper divisors (4623752479).

243421145441 is an equidigital number, since it uses as much as digits as its factorization.

243421145441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7304.

The product of its digits is 61440, while the sum is 35.

Adding to 243421145441 its reverse (144541124342), we get a palindrome (387962269783).

The spelling of 243421145441 in words is "two hundred forty-three billion, four hundred twenty-one million, one hundred forty-five thousand, four hundred forty-one".