9446664666448 has 80 divisors (see below), whose sum is σ = 18483763119696. Its totient is φ = 4676963532800.

The previous prime is 9446664666391. The next prime is 9446664666451. The reversal of 9446664666448 is 8446664666449.

It can be written as a sum of positive squares in 8 ways, for example, as 7797207353104 + 1649457313344 = 2792348^2 + 1284312^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 483121440 + ... + 483140992.

Almost surely, 2^{9446664666448} is an apocalyptic number.

It is an amenable number.

9446664666448 is a deficient number, since it is larger than the sum of its proper divisors (9037098453248).

9446664666448 is a wasteful number, since it uses less digits than its factorization.

9446664666448 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20512 (or 20506 counting only the distinct ones).

The product of its digits is 3439853568, while the sum is 73.

Subtracting from 9446664666448 its reverse (8446664666449), we obtain a palindrome (999999999999).

The spelling of 9446664666448 in words is "nine trillion, four hundred forty-six billion, six hundred sixty-four million, six hundred sixty-six thousand, four hundred forty-eight".