242573515551 has 24 divisors (see below), whose sum is σ = 352639340976. Its totient is φ = 160675332480.

The previous prime is 242573515543. The next prime is 242573515567. The reversal of 242573515551 is 155515375242.

242573515551 is a `hidden beast` number, since 2 + 4 + 2 + 57 + 35 + 15 + 551 = 666.

242573515551 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 242573515551 - 2³ = 242573515543 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 242573515497 and 242573515506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (242573515511) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 5247921 + ... + 5293941.

It is an arithmetic number, because the mean of its divisors is an integer number (14693305874).

Almost surely, 2^242573515551 is an apocalyptic number.

242573515551 is a deficient number, since it is larger than the sum of its proper divisors (110065825425).

242573515551 is a wasteful number, since it uses less digits than its factorization.

242573515551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49783 (or 49780 counting only the distinct ones).

The product of its digits is 1050000, while the sum is 45.

The spelling of 242573515551 in words is "two hundred forty-two billion, five hundred seventy-three million, five hundred fifteen thousand, five hundred fifty-one".