242217528255 has 80 divisors (see below), whose sum is σ = 438342537600. Its totient is φ = 127954349568.

The previous prime is 242217528253. The next prime is 242217528347. The reversal of 242217528255 is 552825712242.

242217528255 is a `hidden beast` number, since 2 + 422 + 175 + 2 + 8 + 2 + 55 = 666.

It is not a de Polignac number, because 242217528255 - 2¹ = 242217528253 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 242217528255.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (242217528251) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 22141147 + ... + 22152083.

It is an arithmetic number, because the mean of its divisors is an integer number (5479281720).

Almost surely, 2^242217528255 is an apocalyptic number.

242217528255 is a deficient number, since it is larger than the sum of its proper divisors (196125009345).

242217528255 is a wasteful number, since it uses less digits than its factorization.

242217528255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11470 (or 11461 counting only the distinct ones).

The product of its digits is 896000, while the sum is 45.

The spelling of 242217528255 in words is "two hundred forty-two billion, two hundred seventeen million, five hundred twenty-eight thousand, two hundred fifty-five".