9668921872 has 10 divisors (see below), whose sum is σ = 18733536158. Its totient is φ = 4834460928.

The previous prime is 9668921839. The next prime is 9668921893. The reversal of 9668921872 is 2781298669.

It can be written as a sum of positive squares in only one way, i.e., 9513271296 + 155650576 = 97536^2 + 12476^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 302153793 + ... + 302153824.

Almost surely, 2^9668921872 is an apocalyptic number.

It is an amenable number.

9668921872 is a deficient number, since it is larger than the sum of its proper divisors (9064614286).

9668921872 is a wasteful number, since it uses less digits than its factorization.

9668921872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 604307625 (or 604307619 counting only the distinct ones).

The product of its digits is 5225472, while the sum is 58.

The square root of 9668921872 is about 98330.6761494092. The cubic root of 9668921872 is about 2130.3911550659.

The spelling of 9668921872 in words is "nine billion, six hundred sixty-eight million, nine hundred twenty-one thousand, eight hundred seventy-two".