201817983620196 has 36 divisors (see below), whose sum is σ = 514918780648272. Its totient is φ = 66643944745584.

The previous prime is 201817983620153. The next prime is 201817983620261. The reversal of 201817983620196 is 691026389718102.

201817983620196 is a `hidden beast` number, since 2 + 0 + 1 + 81 + 7 + 9 + 8 + 362 + 0 + 196 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

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 11 ways as a sum of consecutive naturals, for example, 26196515310 + ... + 26196523013.

It is an arithmetic number, because the mean of its divisors is an integer number (14303299462452).

Almost surely, 2^{201817983620196} is an apocalyptic number.

It is an amenable number.

201817983620196 is an abundant number, since it is smaller than the sum of its proper divisors (313100797028076).

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

201817983620196 is a wasteful number, since it uses less digits than its factorization.

201817983620196 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52393038440 (or 52393038435 counting only the distinct ones).

The product of its (nonzero) digits is 15676416, while the sum is 63.

The spelling of 201817983620196 in words is "two hundred one trillion, eight hundred seventeen billion, nine hundred eighty-three million, six hundred twenty thousand, one hundred ninety-six".