9999928647200 has 162 divisors, whose sum is σ = 25525130347647. Its totient is φ = 3825272563200.

The previous prime is 9999928647161. The next prime is 9999928647211. The reversal of 9999928647200 is 27468299999.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in 5 ways, for example, as 8264038076176 + 1735890571024 = 2874724^2 + 1317532^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=2236060.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 2057172770 + ... + 2057177630.

Almost surely, 2^{9999928647200} 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 9999928647200

9999928647200 is an abundant number, since it is smaller than the sum of its proper divisors (15525201700447).

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

9999928647200 is an frugal number, since it uses more digits than its factorization.

9999928647200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9788 (or 4891 counting only the distinct ones).

The product of its (nonzero) digits is 317447424, while the sum is 74.

The spelling of 9999928647200 in words is "nine trillion, nine hundred ninety-nine billion, nine hundred twenty-eight million, six hundred forty-seven thousand, two hundred".