66204022466 has 4 divisors (see below), whose sum is σ = 99306033702. Its totient is φ = 33102011232.

The previous prime is 66204022463. The next prime is 66204022517. The reversal of 66204022466 is 66422040266.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 49735690225 + 16468332241 = 223015^2 + 128329^2 .

It is not an unprimeable number, because it can be changed into a prime (66204022463) 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 as a sum of consecutive naturals, namely, 16551005615 + ... + 16551005618.

Almost surely, 2^66204022466 is an apocalyptic number.

66204022466 is a deficient number, since it is larger than the sum of its proper divisors (33102011236).

66204022466 is a wasteful number, since it uses less digits than its factorization.

66204022466 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33102011235.

The product of its (nonzero) digits is 165888, while the sum is 38.

The spelling of 66204022466 in words is "sixty-six billion, two hundred four million, twenty-two thousand, four hundred sixty-six".