9665534464 has 20 divisors (see below), whose sum is σ = 19312191954. Its totient is φ = 4832766976.

The previous prime is 9665534449. The next prime is 9665534477. The reversal of 9665534464 is 4644355669.

It can be written as a sum of positive squares in only one way, i.e., 5334841600 + 4330692864 = 73040^2 + 65808^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9438487 + ... + 9439510.

Almost surely, 2^9665534464 is an apocalyptic number.

It is an amenable number.

9665534464 is a deficient number, since it is larger than the sum of its proper divisors (9646657490).

9665534464 is an equidigital number, since it uses as much as digits as its factorization.

9665534464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18878015 (or 18877999 counting only the distinct ones).

The product of its digits is 9331200, while the sum is 52.

The square root of 9665534464 is about 98313.4500666109. The cubic root of 9665534464 is about 2130.1423390812.

The spelling of 9665534464 in words is "nine billion, six hundred sixty-five million, five hundred thirty-four thousand, four hundred sixty-four".