66444444466 has 8 divisors (see below), whose sum is σ = 101070422784. Its totient is φ = 32754303540.

The previous prime is 66444444463. The next prime is 66444444541.

66444444466 is nontrivially palindromic in base 10.

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

It is a zygodrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (66444444463) 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 3 ways as a sum of consecutive naturals, for example, 233959170 + ... + 233959453.

It is an arithmetic number, because the mean of its divisors is an integer number (12633802848).

Almost surely, 2^66444444466 is an apocalyptic number.

66444444466 is a deficient number, since it is larger than the sum of its proper divisors (34625978318).

66444444466 is a wasteful number, since it uses less digits than its factorization.

66444444466 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 467918696.

The product of its digits is 21233664, while the sum is 52.

The spelling of 66444444466 in words is "sixty-six billion, four hundred forty-four million, four hundred forty-four thousand, four hundred sixty-six".