3804381665217 has 48 divisors (see below), whose sum is σ = 6303528241920. Its totient is φ = 2165886907776.

The previous prime is 3804381665177. The next prime is 3804381665239. The reversal of 3804381665217 is 7125661834083.

3804381665217 is a `hidden beast` number, since 3 + 80 + 4 + 38 + 1 + 6 + 6 + 521 + 7 = 666.

It is not a de Polignac number, because 3804381665217 - 2⁸ = 3804381664961 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3804381665257) by changing a digit.

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 47 ways as a sum of consecutive naturals, for example, 21650203 + ... + 21825215.

It is an arithmetic number, because the mean of its divisors is an integer number (131323505040).

Almost surely, 2^{3804381665217} is an apocalyptic number.

It is an amenable number.

3804381665217 is a deficient number, since it is larger than the sum of its proper divisors (2499146576703).

3804381665217 is a wasteful number, since it uses less digits than its factorization.

3804381665217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 176302 (or 176299 counting only the distinct ones).

The product of its (nonzero) digits is 5806080, while the sum is 54.

The spelling of 3804381665217 in words is "three trillion, eight hundred four billion, three hundred eighty-one million, six hundred sixty-five thousand, two hundred seventeen".