66066594242 has 64 divisors (see below), whose sum is σ = 113013802368. Its totient is φ = 28706496000.

The previous prime is 66066594241. The next prime is 66066594271. The reversal of 66066594242 is 24249566066.

It is a Smith number, since the sum of its digits (50) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (66066594241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7606142 + ... + 7614822.

It is an arithmetic number, because the mean of its divisors is an integer number (1765840662).

Almost surely, 2^66066594242 is an apocalyptic number.

66066594242 is a deficient number, since it is larger than the sum of its proper divisors (46947208126).

66066594242 is a wasteful number, since it uses less digits than its factorization.

66066594242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8915.

The product of its (nonzero) digits is 3732480, while the sum is 50.

The spelling of 66066594242 in words is "sixty-six billion, sixty-six million, five hundred ninety-four thousand, two hundred forty-two".