199598071368 has 128 divisors (see below), whose sum is σ = 523992268800. Its totient is φ = 63237563136.

The previous prime is 199598071367. The next prime is 199598071417. The reversal of 199598071368 is 863170895991.

It is a junction number, because it is equal to n+sod(n) for n = 199598071299 and 199598071308.

It is not an unprimeable number, because it can be changed into a prime (199598071367) 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, 87273921 + ... + 87276207.

It is an arithmetic number, because the mean of its divisors is an integer number (4093689600).

Almost surely, 2^199598071368 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 199598071368, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (261996134400).

199598071368 is an abundant number, since it is smaller than the sum of its proper divisors (324394197432).

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

199598071368 is a wasteful number, since it uses less digits than its factorization.

199598071368 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3251 (or 3247 counting only the distinct ones).

The product of its (nonzero) digits is 29393280, while the sum is 66.

The spelling of 199598071368 in words is "one hundred ninety-nine billion, five hundred ninety-eight million, seventy-one thousand, three hundred sixty-eight".