198403996800 has 288 divisors, whose sum is σ = 662694616080. Its totient is φ = 52165539840.

The previous prime is 198403996789. The next prime is 198403996801. The reversal of 198403996800 is 8699304891.

It is not an unprimeable number, because it can be changed into a prime (198403996801) by changing a digit.

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 35 ways as a sum of consecutive naturals, for example, 397602951 + ... + 397603449.

Almost surely, 2^198403996800 is an apocalyptic number.

198403996800 is a gapful number since it is divisible by the number (10) 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 198403996800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (331347308040).

198403996800 is an abundant number, since it is smaller than the sum of its proper divisors (464290619280).

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

198403996800 is an frugal number, since it uses more digits than its factorization.

198403996800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1108 (or 592 counting only the distinct ones).

The product of its (nonzero) digits is 3359232, while the sum is 57.

The spelling of 198403996800 in words is "one hundred ninety-eight billion, four hundred three million, nine hundred ninety-six thousand, eight hundred".