199999800003 has 4 divisors (see below), whose sum is σ = 266666400008. Its totient is φ = 133333200000.

The previous prime is 199999799957. The next prime is 199999800019. The reversal of 199999800003 is 300008999991.

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

It is not a de Polignac number, because 199999800003 - 2²¹ = 199997702851 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (199999800053) 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, 33333299998 + ... + 33333300003.

It is an arithmetic number, because the mean of its divisors is an integer number (66666600002).

Almost surely, 2^199999800003 is an apocalyptic number.

199999800003 is a deficient number, since it is larger than the sum of its proper divisors (66666600005).

199999800003 is an equidigital number, since it uses as much as digits as its factorization.

199999800003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66666600004.

The product of its (nonzero) digits is 1417176, while the sum is 57.

The spelling of 199999800003 in words is "one hundred ninety-nine billion, nine hundred ninety-nine million, eight hundred thousand, three".