199983783840 has 192 divisors, whose sum is σ = 633682538496. Its totient is φ = 53013906432.

The previous prime is 199983783793. The next prime is 199983783841. The reversal of 199983783840 is 48387389991.

It is not an unprimeable number, because it can be changed into a prime (199983783841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 66152569 + ... + 66155591.

It is an arithmetic number, because the mean of its divisors is an integer number (3300429888).

Almost surely, 2^199983783840 is an apocalyptic number.

199983783840 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 199983783840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (316841269248).

199983783840 is an abundant number, since it is smaller than the sum of its proper divisors (433698754656).

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

199983783840 is a wasteful number, since it uses less digits than its factorization.

199983783840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3811 (or 3803 counting only the distinct ones).

The product of its (nonzero) digits is 94058496, while the sum is 69.

The spelling of 199983783840 in words is "one hundred ninety-nine billion, nine hundred eighty-three million, seven hundred eighty-three thousand, eight hundred forty".