243435243545 has 16 divisors (see below), whose sum is σ = 315898624272. Its totient is φ = 179021629440.

The previous prime is 243435243511. The next prime is 243435243563. The reversal of 243435243545 is 545342534342.

243435243545 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 7293672409 + 236141571136 = 85403^2 + 485944^2 .

It is not a de Polignac number, because 243435243545 - 2¹² = 243435239449 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 243435243496 and 243435243505.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 7754372 + ... + 7785701.

It is an arithmetic number, because the mean of its divisors is an integer number (19743664017).

Almost surely, 2^243435243545 is an apocalyptic number.

It is an amenable number.

243435243545 is a deficient number, since it is larger than the sum of its proper divisors (72463380727).

243435243545 is a wasteful number, since it uses less digits than its factorization.

243435243545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15540332.

The product of its digits is 3456000, while the sum is 44.

Adding to 243435243545 its reverse (545342534342), we get a palindrome (788777777887).

The spelling of 243435243545 in words is "two hundred forty-three billion, four hundred thirty-five million, two hundred forty-three thousand, five hundred forty-five".