199803816180036 has 18 divisors (see below), whose sum is σ = 505059646455182. Its totient is φ = 66601272060000.

The previous prime is 199803816179951. The next prime is 199803816180097. The reversal of 199803816180036 is 630081618308991.

199803816180036 is a `hidden beast` number, since 1 + 9 + 9 + 8 + 0 + 3 + 8 + 1 + 618 + 0 + 0 + 3 + 6 = 666.

It can be written as a sum of positive squares in only one way, i.e., 119531713499136 + 80272102680900 = 10933056^2 + 8959470^2 .

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

It is a super-2 number, since 2×199803816180036² (a number of 29 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2775053002465 + ... + 2775053002536.

Almost surely, 2^{199803816180036} is an apocalyptic number.

It is an amenable number.

199803816180036 is an abundant number, since it is smaller than the sum of its proper divisors (305255830275146).

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

199803816180036 is a wasteful number, since it uses less digits than its factorization.

199803816180036 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5550106005011 (or 5550106005006 counting only the distinct ones).

The product of its (nonzero) digits is 13436928, while the sum is 63.

The spelling of 199803816180036 in words is "one hundred ninety-nine trillion, eight hundred three billion, eight hundred sixteen million, one hundred eighty thousand, thirty-six".