9438921997200 has 840 divisors, whose sum is σ = 34960984663296. Its totient is φ = 2446640640000.

The previous prime is 9438921997181. The next prime is 9438921997243. The reversal of 9438921997200 is 27991298349.

9438921997200 is a `hidden beast` number, since 9 + 438 + 9 + 2 + 199 + 7 + 2 + 0 + 0 = 666.

It is an unprimeable number.

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 167 ways as a sum of consecutive naturals, for example, 2069482920 + ... + 2069487480.

Almost surely, 2^{9438921997200} is an apocalyptic number.

9438921997200 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9438921997200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17480492331648).

9438921997200 is an abundant number, since it is smaller than the sum of its proper divisors (25522062666096).

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

9438921997200 is a wasteful number, since it uses less digits than its factorization.

9438921997200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4795 (or 4769 counting only the distinct ones).

The product of its (nonzero) digits is 17635968, while the sum is 63.

The spelling of 9438921997200 in words is "nine trillion, four hundred thirty-eight billion, nine hundred twenty-one million, nine hundred ninety-seven thousand, two hundred".