198865196706 has 32 divisors (see below), whose sum is σ = 443119362048. Its totient is φ = 58980005840.

The previous prime is 198865196689. The next prime is 198865196711. The reversal of 198865196706 is 607691568891.

It is a Harshad number since it is a multiple of its sum of digits (66).

It is a Curzon number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 32051250 + ... + 32057453.

It is an arithmetic number, because the mean of its divisors is an integer number (13847480064).

Almost surely, 2^198865196706 is an apocalyptic number.

198865196706 is an abundant number, since it is smaller than the sum of its proper divisors (244254165342).

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

198865196706 is a wasteful number, since it uses less digits than its factorization.

198865196706 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64108766.

The product of its (nonzero) digits is 39191040, while the sum is 66.

The spelling of 198865196706 in words is "one hundred ninety-eight billion, eight hundred sixty-five million, one hundred ninety-six thousand, seven hundred six".