66757231222 has 16 divisors (see below), whose sum is σ = 113988632832. Its totient is φ = 29024882920.

The previous prime is 66757231193. The next prime is 66757231231. The reversal of 66757231222 is 22213275766.

It is a super-2 number, since 2×66757231222² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 65965138 + ... + 65966149.

It is an arithmetic number, because the mean of its divisors is an integer number (7124289552).

Almost surely, 2^66757231222 is an apocalyptic number.

66757231222 is a deficient number, since it is larger than the sum of its proper divisors (47231401610).

66757231222 is a wasteful number, since it uses less digits than its factorization.

66757231222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131931323.

The product of its digits is 423360, while the sum is 43.

The spelling of 66757231222 in words is "sixty-six billion, seven hundred fifty-seven million, two hundred thirty-one thousand, two hundred twenty-two".