243433140555255 has 64 divisors (see below), whose sum is σ = 450145917527040. Its totient is φ = 110035664234496.

The previous prime is 243433140555251. The next prime is 243433140555263. The reversal of 243433140555255 is 552555041334342.

It is not a de Polignac number, because 243433140555255 - 2² = 243433140555251 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 243433140555198 and 243433140555207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243433140555251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 19511752 + ... + 29454621.

It is an arithmetic number, because the mean of its divisors is an integer number (7033529961360).

Almost surely, 2^{243433140555255} is an apocalyptic number.

243433140555255 is a deficient number, since it is larger than the sum of its proper divisors (206712776971785).

243433140555255 is a wasteful number, since it uses less digits than its factorization.

243433140555255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48966920.

The product of its (nonzero) digits is 21600000, while the sum is 51.

Adding to 243433140555255 its reverse (552555041334342), we get a palindrome (795988181889597).

The spelling of 243433140555255 in words is "two hundred forty-three trillion, four hundred thirty-three billion, one hundred forty million, five hundred fifty-five thousand, two hundred fifty-five".