199387268999 has 16 divisors (see below), whose sum is σ = 204885542400. Its totient is φ = 193975943616.

The previous prime is 199387268963. The next prime is 199387269061. The reversal of 199387268999 is 999862783991.

It is a happy number.

199387268999 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-199387268999 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 (199387258999) 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 15 ways as a sum of consecutive naturals, for example, 2444987 + ... + 2525219.

It is an arithmetic number, because the mean of its divisors is an integer number (12805346400).

Almost surely, 2^199387268999 is an apocalyptic number.

199387268999 is a deficient number, since it is larger than the sum of its proper divisors (5498273401).

199387268999 is an equidigital number, since it uses as much as digits as its factorization.

199387268999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80774.

The product of its digits is 952342272, while the sum is 80.

The spelling of 199387268999 in words is "one hundred ninety-nine billion, three hundred eighty-seven million, two hundred sixty-eight thousand, nine hundred ninety-nine".