3805666185216 has 208 divisors, whose sum is σ = 11640968469504. Its totient is φ = 1083192410112.

The previous prime is 3805666185179. The next prime is 3805666185247. The reversal of 3805666185216 is 6125816665083.

It is a super-2 number, since 2×3805666185216² (a number of 26 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22538095 + ... + 22706321.

Almost surely, 2^{3805666185216} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3805666185216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5820484234752).

3805666185216 is an abundant number, since it is smaller than the sum of its proper divisors (7835302284288).

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

3805666185216 is a wasteful number, since it uses less digits than its factorization.

3805666185216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 168524 (or 168502 counting only the distinct ones).

The product of its (nonzero) digits is 12441600, while the sum is 57.

The spelling of 3805666185216 in words is "three trillion, eight hundred five billion, six hundred sixty-six million, one hundred eighty-five thousand, two hundred sixteen".