200001998123 has 8 divisors (see below), whose sum is σ = 212520445200. Its totient is φ = 187567287040.

The previous prime is 200001998111. The next prime is 200001998179. The reversal of 200001998123 is 321899100002.

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 200001998123 - 2¹⁶ = 200001932587 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (200001998323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20929073 + ... + 20938626.

It is an arithmetic number, because the mean of its divisors is an integer number (26565055650).

Almost surely, 2^200001998123 is an apocalyptic number.

200001998123 is a deficient number, since it is larger than the sum of its proper divisors (12518447077).

200001998123 is a wasteful number, since it uses less digits than its factorization.

200001998123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41867997.

The product of its (nonzero) digits is 7776, while the sum is 35.

The spelling of 200001998123 in words is "two hundred billion, one million, nine hundred ninety-eight thousand, one hundred twenty-three".