20163801800196 has 18 divisors (see below), whose sum is σ = 50969610106142. Its totient is φ = 6721267266720.

The previous prime is 20163801800189. The next prime is 20163801800227. The reversal of 20163801800196 is 69100810836102.

20163801800196 is a `hidden beast` number, since 2 + 0 + 1 + 6 + 380 + 1 + 80 + 0 + 196 = 666.

It can be written as a sum of positive squares in only one way, i.e., 20108820929796 + 54980870400 = 4484286^2 + 234480^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 280052802745 + ... + 280052802816.

Almost surely, 2^{20163801800196} is an apocalyptic number.

It is an amenable number.

20163801800196 is an abundant number, since it is smaller than the sum of its proper divisors (30805808305946).

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

20163801800196 is a wasteful number, since it uses less digits than its factorization.

20163801800196 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 560105605571 (or 560105605566 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 45.

The spelling of 20163801800196 in words is "twenty trillion, one hundred sixty-three billion, eight hundred one million, eight hundred thousand, one hundred ninety-six".