9660784297172 has 24 divisors (see below), whose sum is σ = 16925085444960. Its totient is φ = 4825048541600.

The previous prime is 9660784297169. The next prime is 9660784297181. The reversal of 9660784297172 is 2717924870669.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12829922 + ... + 13562022.

It is an arithmetic number, because the mean of its divisors is an integer number (705211893540).

Almost surely, 2^{9660784297172} is an apocalyptic number.

It is an amenable number.

9660784297172 is a deficient number, since it is larger than the sum of its proper divisors (7264301147788).

9660784297172 is a wasteful number, since it uses less digits than its factorization.

9660784297172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 735751 (or 735749 counting only the distinct ones).

The product of its (nonzero) digits is 128024064, while the sum is 68.

The spelling of 9660784297172 in words is "nine trillion, six hundred sixty billion, seven hundred eighty-four million, two hundred ninety-seven thousand, one hundred seventy-two".