198343889314720 has 96 divisors (see below), whose sum is σ = 477859237385040. Its totient is φ = 77770427105280.

The previous prime is 198343889314717. The next prime is 198343889314721. The reversal of 198343889314720 is 27413988343891.

It can be written as a sum of positive squares in 8 ways, for example, as 8550173668624 + 189793715646096 = 2924068^2 + 13776564^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 198343889314720.

It is not an unprimeable number, because it can be changed into a prime (198343889314721) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1141041 + ... + 19949680.

Almost surely, 2^{198343889314720} is an apocalyptic number.

198343889314720 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 198343889314720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (238929618692520).

198343889314720 is an abundant number, since it is smaller than the sum of its proper divisors (279515348070320).

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

198343889314720 is a wasteful number, since it uses less digits than its factorization.

198343889314720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21091898 (or 21091890 counting only the distinct ones).

The product of its (nonzero) digits is 250822656, while the sum is 70.

The spelling of 198343889314720 in words is "one hundred ninety-eight trillion, three hundred forty-three billion, eight hundred eighty-nine million, three hundred fourteen thousand, seven hundred twenty".