9916638016 has 56 divisors (see below), whose sum is σ = 20852846280. Its totient is φ = 4662853632.

The previous prime is 9916637993. The next prime is 9916638077. The reversal of 9916638016 is 6108366199.

It can be written as a sum of positive squares in 4 ways, for example, as 55353600 + 9861284416 = 7440^2 + 99304^2 .

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, 1686730 + ... + 1692598.

It is an arithmetic number, because the mean of its divisors is an integer number (372372255).

Almost surely, 2^9916638016 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 9916638016, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10426423140).

9916638016 is an abundant number, since it is smaller than the sum of its proper divisors (10936208264).

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

9916638016 is a wasteful number, since it uses less digits than its factorization.

9916638016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7451 (or 7441 counting only the distinct ones).

The product of its (nonzero) digits is 419904, while the sum is 49.

The square root of 9916638016 is about 99582.3177878483. The cubic root of 9916638016 is about 2148.4313790642.

The spelling of 9916638016 in words is "nine billion, nine hundred sixteen million, six hundred thirty-eight thousand, sixteen".