9666464646669 has 4 divisors (see below), whose sum is σ = 12888619528896. Its totient is φ = 6444309764444.

The previous prime is 9666464646637. The next prime is 9666464646767.

9666464646669 is nontrivially palindromic in base 10.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 9666464646669 - 2⁵ = 9666464646637 is a prime.

It is a super-2 number, since 2×9666464646669² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 9666464646594 and 9666464646603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9666464646469) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 1611077441109 + ... + 1611077441114.

It is an arithmetic number, because the mean of its divisors is an integer number (3222154882224).

Almost surely, 2^{9666464646669} is an apocalyptic number.

It is an amenable number.

9666464646669 is a deficient number, since it is larger than the sum of its proper divisors (3222154882227).

9666464646669 is a wasteful number, since it uses less digits than its factorization.

9666464646669 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3222154882226.

The product of its digits is 8707129344, while the sum is 78.

The spelling of 9666464646669 in words is "nine trillion, six hundred sixty-six billion, four hundred sixty-four million, six hundred forty-six thousand, six hundred sixty-nine".