9965380664 has 16 divisors (see below), whose sum is σ = 19329402600. Its totient is φ = 4810873312.

The previous prime is 9965380619. The next prime is 9965380679. The reversal of 9965380664 is 4660835699.

9965380664 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

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 in 3 ways as a sum of consecutive naturals, for example, 21476882 + ... + 21477345.

Almost surely, 2^9965380664 is an apocalyptic number.

It is an amenable number.

9965380664 is a deficient number, since it is larger than the sum of its proper divisors (9364021936).

9965380664 is a wasteful number, since it uses less digits than its factorization.

9965380664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42954262 (or 42954258 counting only the distinct ones).

The product of its (nonzero) digits is 8398080, while the sum is 56.

The square root of 9965380664 is about 99826.7532478143. The cubic root of 9965380664 is about 2151.9456455686.

The spelling of 9965380664 in words is "nine billion, nine hundred sixty-five million, three hundred eighty thousand, six hundred sixty-four".