243550353453439 has 2 divisors, whose sum is σ = 243550353453440. Its totient is φ = 243550353453438.

The previous prime is 243550353453431. The next prime is 243550353453469. The reversal of 243550353453439 is 934354353055342.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 243550353453439 - 2³ = 243550353453431 is a prime.

It is a super-3 number, since 3×243550353453439³ (a number of 44 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (243550353453431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121775176726719 + 121775176726720.

It is an arithmetic number, because the mean of its divisors is an integer number (121775176726720).

Almost surely, 2^{243550353453439} is an apocalyptic number.

243550353453439 is a deficient number, since it is larger than the sum of its proper divisors (1).

243550353453439 is an equidigital number, since it uses as much as digits as its factorization.

243550353453439 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 174960000, while the sum is 58.

The spelling of 243550353453439 in words is "two hundred forty-three trillion, five hundred fifty billion, three hundred fifty-three million, four hundred fifty-three thousand, four hundred thirty-nine".