242553431555 has 48 divisors (see below), whose sum is σ = 318971794752. Its totient is φ = 176433561600.

The previous prime is 242553431503. The next prime is 242553431563. The reversal of 242553431555 is 555134355242.

242553431555 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 242553431555 - 2¹⁶ = 242553366019 is a prime.

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 47 ways as a sum of consecutive naturals, for example, 14708915 + ... + 14725395.

It is an arithmetic number, because the mean of its divisors is an integer number (6645245724).

Almost surely, 2^242553431555 is an apocalyptic number.

242553431555 is a deficient number, since it is larger than the sum of its proper divisors (76418363197).

242553431555 is a wasteful number, since it uses less digits than its factorization.

242553431555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16688 (or 16647 counting only the distinct ones).

The product of its digits is 1800000, while the sum is 44.

Adding to 242553431555 its reverse (555134355242), we get a palindrome (797687786797).

The spelling of 242553431555 in words is "two hundred forty-two billion, five hundred fifty-three million, four hundred thirty-one thousand, five hundred fifty-five".