199605385896 has 192 divisors, whose sum is σ = 634460014080. Its totient is φ = 51943772160.

The previous prime is 199605385867. The next prime is 199605385909. The reversal of 199605385896 is 698583506991.

It is a self number, because there is not a number n which added to its sum of digits gives 199605385896.

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, 458716 + ... + 780788.

It is an arithmetic number, because the mean of its divisors is an integer number (3304479240).

Almost surely, 2^199605385896 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 199605385896, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (317230007040).

199605385896 is an abundant number, since it is smaller than the sum of its proper divisors (434854628184).

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

199605385896 is a wasteful number, since it uses less digits than its factorization.

199605385896 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 322144 (or 322133 counting only the distinct ones).

The product of its (nonzero) digits is 125971200, while the sum is 69.

The spelling of 199605385896 in words is "one hundred ninety-nine billion, six hundred five million, three hundred eighty-five thousand, eight hundred ninety-six".