66632223666 has 8 divisors (see below), whose sum is σ = 133264447344. Its totient is φ = 22210741220.

The previous prime is 66632223643. The next prime is 66632223683.

66632223666 is nontrivially palindromic in base 10.

It is a sphenic number, since it is the product of 3 distinct primes.

66632223666 is an admirable number.

It is a nude number because it is divisible by every one of its digits.

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 3 ways as a sum of consecutive naturals, for example, 5552685300 + ... + 5552685311.

It is an arithmetic number, because the mean of its divisors is an integer number (16658055918).

Almost surely, 2^66632223666 is an apocalyptic number.

66632223666 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

66632223666 is a wasteful number, since it uses less digits than its factorization.

66632223666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11105370616.

The product of its digits is 3359232, while the sum is 48.

The spelling of 66632223666 in words is "sixty-six billion, six hundred thirty-two million, two hundred twenty-three thousand, six hundred sixty-six".