9968916872 has 16 divisors (see below), whose sum is σ = 18697383900. Its totient is φ = 4982947840.

The previous prime is 9968916821. The next prime is 9968916907. The reversal of 9968916872 is 2786198699.

It can be written as a sum of positive squares in 2 ways, for example, as 9697128676 + 271788196 = 98474^2 + 16486^2 .

It is a junction number, because it is equal to n+sod(n) for n = 9968916799 and 9968916808.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 160529 + ... + 213792.

Almost surely, 2^9968916872 is an apocalyptic number.

It is an amenable number.

9968916872 is a deficient number, since it is larger than the sum of its proper divisors (8728467028).

9968916872 is a wasteful number, since it uses less digits than its factorization.

9968916872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 377656 (or 377652 counting only the distinct ones).

The product of its digits is 23514624, while the sum is 65.

The square root of 9968916872 is about 99844.4634018332. The cubic root of 9968916872 is about 2152.2001542435.

The spelling of 9968916872 in words is "nine billion, nine hundred sixty-eight million, nine hundred sixteen thousand, eight hundred seventy-two".