199108126911 has 8 divisors (see below), whose sum is σ = 267067188864. Its totient is φ = 131943908120.

The previous prime is 199108126907. The next prime is 199108126927. The reversal of 199108126911 is 119621801991.

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

It is a cyclic number.

It is not a de Polignac number, because 199108126911 - 2² = 199108126907 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (199108126901) 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 7 ways as a sum of consecutive naturals, for example, 198710205 + ... + 198711206.

It is an arithmetic number, because the mean of its divisors is an integer number (33383398608).

Almost surely, 2^199108126911 is an apocalyptic number.

199108126911 is a deficient number, since it is larger than the sum of its proper divisors (67959061953).

199108126911 is a wasteful number, since it uses less digits than its factorization.

199108126911 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 397421581.

The product of its (nonzero) digits is 69984, while the sum is 48.

The spelling of 199108126911 in words is "one hundred ninety-nine billion, one hundred eight million, one hundred twenty-six thousand, nine hundred eleven".