198163605600 has 288 divisors, whose sum is σ = 717569072640. Its totient is φ = 52778949120.

The previous prime is 198163605559. The next prime is 198163605613. The reversal of 198163605600 is 6506361891.

198163605600 is a `hidden beast` number, since 1 + 9 + 8 + 1 + 6 + 36 + 0 + 5 + 600 = 666.

It is a tau number, because it is divible by the number of its divisors (288).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 19154029 + ... + 19164371.

It is an arithmetic number, because the mean of its divisors is an integer number (2491559280).

Almost surely, 2^198163605600 is an apocalyptic number.

198163605600 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 198163605600, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (358784536320).

198163605600 is an abundant number, since it is smaller than the sum of its proper divisors (519405467040).

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

198163605600 is a wasteful number, since it uses less digits than its factorization.

198163605600 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11259 (or 11240 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 45.

The spelling of 198163605600 in words is "one hundred ninety-eight billion, one hundred sixty-three million, six hundred five thousand, six hundred".