3115867185666 has 64 divisors (see below), whose sum is σ = 7178489619840. Its totient is φ = 1001081767680.

The previous prime is 3115867185601. The next prime is 3115867185667. The reversal of 3115867185666 is 6665817685113.

It is a happy number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (3115867185667) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8294235 + ... + 8661758.

It is an arithmetic number, because the mean of its divisors is an integer number (112163900310).

Almost surely, 2^{3115867185666} is an apocalyptic number.

3115867185666 is an abundant number, since it is smaller than the sum of its proper divisors (4062622434174).

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

3115867185666 is a wasteful number, since it uses less digits than its factorization.

3115867185666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16956128 (or 16956122 counting only the distinct ones).

The product of its digits is 43545600, while the sum is 63.

The spelling of 3115867185666 in words is "three trillion, one hundred fifteen billion, eight hundred sixty-seven million, one hundred eighty-five thousand, six hundred sixty-six".