243120004545 has 128 divisors (see below), whose sum is σ = 437902972416. Its totient is φ = 114186240000.

The previous prime is 243120004531. The next prime is 243120004553. The reversal of 243120004545 is 545400021342.

243120004545 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 243120004545 - 2⁷ = 243120004417 is a prime.

It is a Curzon number.

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 127 ways as a sum of consecutive naturals, for example, 205858855 + ... + 205860035.

It is an arithmetic number, because the mean of its divisors is an integer number (3421116972).

Almost surely, 2^243120004545 is an apocalyptic number.

It is an amenable number.

243120004545 is a deficient number, since it is larger than the sum of its proper divisors (194782967871).

243120004545 is a wasteful number, since it uses less digits than its factorization.

243120004545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1555.

The product of its (nonzero) digits is 19200, while the sum is 30.

Adding to 243120004545 its reverse (545400021342), we get a palindrome (788520025887).

The spelling of 243120004545 in words is "two hundred forty-three billion, one hundred twenty million, four thousand, five hundred forty-five".