199100019992 has 16 divisors (see below), whose sum is σ = 376737424800. Its totient is φ = 98636706720.

The previous prime is 199100019983. The next prime is 199100020019. The reversal of 199100019992 is 299910001991.

It is a self number, because there is not a number n which added to its sum of digits gives 199100019992.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 114161984 + ... + 114163727.

It is an arithmetic number, because the mean of its divisors is an integer number (23546089050).

Almost surely, 2^199100019992 is an apocalyptic number.

It is an amenable number.

199100019992 is a deficient number, since it is larger than the sum of its proper divisors (177637404808).

199100019992 is a wasteful number, since it uses less digits than its factorization.

199100019992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 228325826 (or 228325822 counting only the distinct ones).

The product of its (nonzero) digits is 118098, while the sum is 50.

The spelling of 199100019992 in words is "one hundred ninety-nine billion, one hundred million, nineteen thousand, nine hundred ninety-two".