199755071999 has 8 divisors (see below), whose sum is σ = 236163632160. Its totient is φ = 165314542176.

The previous prime is 199755071953. The next prime is 199755072053. The reversal of 199755071999 is 999170557991.

199755071999 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 199755071999 - 2²⁸ = 199486636543 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (199755071939) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 492007364 + ... + 492007769.

It is an arithmetic number, because the mean of its divisors is an integer number (29520454020).

Almost surely, 2^199755071999 is an apocalyptic number.

199755071999 is a deficient number, since it is larger than the sum of its proper divisors (36408560161).

199755071999 is an equidigital number, since it uses as much as digits as its factorization.

199755071999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 984015169.

The product of its (nonzero) digits is 72335025, while the sum is 71.

The spelling of 199755071999 in words is "one hundred ninety-nine billion, seven hundred fifty-five million, seventy-one thousand, nine hundred ninety-nine".