66434443466 has 4 divisors (see below), whose sum is σ = 99651665202. Its totient is φ = 33217221732.

The previous prime is 66434443441. The next prime is 66434443489.

66434443466 is nontrivially palindromic in base 10.

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., 44744517841 + 21689925625 = 211529^2 + 147275^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16608610865 + ... + 16608610868.

Almost surely, 2^66434443466 is an apocalyptic number.

66434443466 is a deficient number, since it is larger than the sum of its proper divisors (33217221736).

66434443466 is a wasteful number, since it uses less digits than its factorization.

66434443466 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33217221735.

The product of its digits is 11943936, while the sum is 50.

The spelling of 66434443466 in words is "sixty-six billion, four hundred thirty-four million, four hundred forty-three thousand, four hundred sixty-six".