199083171840 has 896 divisors, whose sum is σ = 788145500160. Its totient is φ = 41904242688.

The previous prime is 199083171829. The next prime is 199083171949. The reversal of 199083171840 is 48171380991.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (896).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 573726547 + ... + 573726893.

Almost surely, 2^199083171840 is an apocalyptic number.

199083171840 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 199083171840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (394072750080).

199083171840 is an abundant number, since it is smaller than the sum of its proper divisors (589062328320).

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

199083171840 is a wasteful number, since it uses less digits than its factorization.

199083171840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 440 (or 416 counting only the distinct ones).

The product of its (nonzero) digits is 435456, while the sum is 51.

The spelling of 199083171840 in words is "one hundred ninety-nine billion, eighty-three million, one hundred seventy-one thousand, eight hundred forty".