243235065643 has 8 divisors (see below), whose sum is σ = 244069668000. Its totient is φ = 242401892928.

The previous prime is 243235065631. The next prime is 243235065649. The reversal of 243235065643 is 346560532342.

243235065643 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 243235065643 - 2⁵ = 243235065611 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 243235065643.

It is not an unprimeable number, because it can be changed into a prime (243235065649) 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 7 ways as a sum of consecutive naturals, for example, 15996 + ... + 697657.

It is an arithmetic number, because the mean of its divisors is an integer number (30508708500).

Almost surely, 2^243235065643 is an apocalyptic number.

243235065643 is a deficient number, since it is larger than the sum of its proper divisors (834602357).

243235065643 is an equidigital number, since it uses as much as digits as its factorization.

243235065643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 714821.

The product of its (nonzero) digits is 1555200, while the sum is 43.

Adding to 243235065643 its reverse (346560532342), we get a palindrome (589795597985).

The spelling of 243235065643 in words is "two hundred forty-three billion, two hundred thirty-five million, sixty-five thousand, six hundred forty-three".