243354621055 has 32 divisors (see below), whose sum is σ = 359512401024. Its totient is φ = 153994162176.

The previous prime is 243354621043. The next prime is 243354621079. The reversal of 243354621055 is 550126453342.

243354621055 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 243354621055 - 2⁵ = 243354621023 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 243354620999 and 243354621017.

It is a congruent 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 31 ways as a sum of consecutive naturals, for example, 1674247 + ... + 1813783.

It is an arithmetic number, because the mean of its divisors is an integer number (11234762532).

Almost surely, 2^243354621055 is an apocalyptic number.

243354621055 is a deficient number, since it is larger than the sum of its proper divisors (116157779969).

243354621055 is a wasteful number, since it uses less digits than its factorization.

243354621055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143395.

The product of its (nonzero) digits is 432000, while the sum is 40.

The spelling of 243354621055 in words is "two hundred forty-three billion, three hundred fifty-four million, six hundred twenty-one thousand, fifty-five".