243035144551 has 2 divisors, whose sum is σ = 243035144552. Its totient is φ = 243035144550.

The previous prime is 243035144549. The next prime is 243035144567. The reversal of 243035144551 is 155441530342.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 243035144551 - 2¹ = 243035144549 is a prime.

Together with 243035144549, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 243035144551.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (243035144531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121517572275 + 121517572276.

It is an arithmetic number, because the mean of its divisors is an integer number (121517572276).

Almost surely, 2^243035144551 is an apocalyptic number.

243035144551 is a deficient number, since it is larger than the sum of its proper divisors (1).

243035144551 is an equidigital number, since it uses as much as digits as its factorization.

243035144551 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144000, while the sum is 37.

Adding to 243035144551 its reverse (155441530342), we get a palindrome (398476674893).

The spelling of 243035144551 in words is "two hundred forty-three billion, thirty-five million, one hundred forty-four thousand, five hundred fifty-one".