243944119543 has 2 divisors, whose sum is σ = 243944119544. Its totient is φ = 243944119542.

The previous prime is 243944119511. The next prime is 243944119571. The reversal of 243944119543 is 345911449342.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 243944119543 - 2⁵ = 243944119511 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (243944119043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121972059771 + 121972059772.

It is an arithmetic number, because the mean of its divisors is an integer number (121972059772).

Almost surely, 2^243944119543 is an apocalyptic number.

243944119543 is a deficient number, since it is larger than the sum of its proper divisors (1).

243944119543 is an equidigital number, since it uses as much as digits as its factorization.

243944119543 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1866240, while the sum is 49.

The spelling of 243944119543 in words is "two hundred forty-three billion, nine hundred forty-four million, one hundred nineteen thousand, five hundred forty-three".