990199011103 has 4 divisors (see below), whose sum is σ = 996844642200. Its totient is φ = 983553380008.

The previous prime is 990199011083. The next prime is 990199011187. The reversal of 990199011103 is 301110991099.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 990199011103 - 2¹³ = 990199002911 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 990199011103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (990119011103) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3322815325 + ... + 3322815622.

It is an arithmetic number, because the mean of its divisors is an integer number (249211160550).

Almost surely, 2^990199011103 is an apocalyptic number.

990199011103 is a deficient number, since it is larger than the sum of its proper divisors (6645631097).

990199011103 is a wasteful number, since it uses less digits than its factorization.

990199011103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6645631096.

The product of its (nonzero) digits is 19683, while the sum is 43.

The spelling of 990199011103 in words is "nine hundred ninety billion, one hundred ninety-nine million, eleven thousand, one hundred three".