198199983996 has 96 divisors (see below), whose sum is σ = 621803911680. Its totient is φ = 53297471232.

The previous prime is 198199983871. The next prime is 198199984019. The reversal of 198199983996 is 699389991891.

It is a super-2 number, since 2×198199983996² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 7698010 + ... + 7723713.

It is an arithmetic number, because the mean of its divisors is an integer number (6477124080).

Almost surely, 2^198199983996 is an apocalyptic number.

It is an amenable number.

198199983996 is an abundant number, since it is smaller than the sum of its proper divisors (423603927684).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

198199983996 is a wasteful number, since it uses less digits than its factorization.

198199983996 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15421760 (or 15421752 counting only the distinct ones).

The product of its digits is 612220032, while the sum is 81.

The spelling of 198199983996 in words is "one hundred ninety-eight billion, one hundred ninety-nine million, nine hundred eighty-three thousand, nine hundred ninety-six".