243115155055 has 8 divisors (see below), whose sum is σ = 292670258832. Its totient is φ = 193870742208.

The previous prime is 243115155011. The next prime is 243115155163. The reversal of 243115155055 is 550551511342.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-243115155055 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 77671009 + ... + 77674138.

It is an arithmetic number, because the mean of its divisors is an integer number (36583782354).

Almost surely, 2^243115155055 is an apocalyptic number.

243115155055 is a deficient number, since it is larger than the sum of its proper divisors (49555103777).

243115155055 is a wasteful number, since it uses less digits than its factorization.

243115155055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155345465.

The product of its (nonzero) digits is 75000, while the sum is 37.

Adding to 243115155055 its reverse (550551511342), we get a palindrome (793666666397).

The spelling of 243115155055 in words is "two hundred forty-three billion, one hundred fifteen million, one hundred fifty-five thousand, fifty-five".