3720166833385 has 16 divisors (see below), whose sum is σ = 4548514306896. Its totient is φ = 2919926134528.

The previous prime is 3720166833301. The next prime is 3720166833419. The reversal of 3720166833385 is 5833386610273.

It can be written as a sum of positive squares in 8 ways, for example, as 517727738089 + 3202439095296 = 719533^2 + 1789536^2 .

It is a cyclic number.

It is not a de Polignac number, because 3720166833385 - 2²⁷ = 3720032615657 is a prime.

It is a Duffinian number.

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 15 ways as a sum of consecutive naturals, for example, 20376927 + ... + 20558683.

It is an arithmetic number, because the mean of its divisors is an integer number (284282144181).

Almost surely, 2^{3720166833385} is an apocalyptic number.

It is an amenable number.

3720166833385 is a deficient number, since it is larger than the sum of its proper divisors (828347473511).

3720166833385 is a wasteful number, since it uses less digits than its factorization.

3720166833385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 259052.

The product of its (nonzero) digits is 13063680, while the sum is 55.

The spelling of 3720166833385 in words is "three trillion, seven hundred twenty billion, one hundred sixty-six million, eight hundred thirty-three thousand, three hundred eighty-five".