199789093056 has 224 divisors, whose sum is σ = 637235200000. Its totient is φ = 53966435328.

The previous prime is 199789093039. The next prime is 199789093057. The reversal of 199789093056 is 650390987991.

It is a tau number, because it is divible by the number of its divisors (224).

It is not an unprimeable number, because it can be changed into a prime (199789093057) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12734625 + ... + 12750303.

It is an arithmetic number, because the mean of its divisors is an integer number (2844800000).

Almost surely, 2^199789093056 is an apocalyptic number.

199789093056 is a gapful number since it is divisible by the number (16) 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 199789093056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (318617600000).

199789093056 is an abundant number, since it is smaller than the sum of its proper divisors (437446106944).

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

199789093056 is a wasteful number, since it uses less digits than its factorization.

199789093056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16219 (or 16209 counting only the distinct ones).

The product of its (nonzero) digits is 33067440, while the sum is 66.

The spelling of 199789093056 in words is "one hundred ninety-nine billion, seven hundred eighty-nine million, ninety-three thousand, fifty-six".