66454845466 has 4 divisors (see below), whose sum is σ = 99682268202. Its totient is φ = 33227422732.

The previous prime is 66454845433. The next prime is 66454845511.

66454845466 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., 45271498441 + 21183347025 = 212771^2 + 145545^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 66454845466.

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 as a sum of consecutive naturals, namely, 16613711365 + ... + 16613711368.

Almost surely, 2^66454845466 is an apocalyptic number.

66454845466 is a deficient number, since it is larger than the sum of its proper divisors (33227422736).

66454845466 is a wasteful number, since it uses less digits than its factorization.

66454845466 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33227422735.

The product of its digits is 66355200, while the sum is 58.

The spelling of 66454845466 in words is "sixty-six billion, four hundred fifty-four million, eight hundred forty-five thousand, four hundred sixty-six".