9894656979648 has 560 divisors, whose sum is σ = 35201679135744. Its totient is φ = 2686870517760.

The previous prime is 9894656979643. The next prime is 9894656979659. The reversal of 9894656979648 is 8469796564989.

9894656979648 is a `hidden beast` number, since 9 + 89 + 465 + 6 + 9 + 7 + 9 + 64 + 8 = 666.

It is not an unprimeable number, because it can be changed into a prime (9894656979643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 130998213 + ... + 131073723.

Almost surely, 2^{9894656979648} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9894656979648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17600839567872).

9894656979648 is an abundant number, since it is smaller than the sum of its proper divisors (25307022156096).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

9894656979648 is a wasteful number, since it uses less digits than its factorization.

9894656979648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75722 (or 75703 counting only the distinct ones).

The product of its digits is 50791587840, while the sum is 90.

The spelling of 9894656979648 in words is "nine trillion, eight hundred ninety-four billion, six hundred fifty-six million, nine hundred seventy-nine thousand, six hundred forty-eight".