2666159868 has 12 divisors (see below), whose sum is σ = 6221039720. Its totient is φ = 888719952.

The previous prime is 2666159851. The next prime is 2666159869. The reversal of 2666159868 is 8689516662.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2666159869) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 111089983 + ... + 111090006.

Almost surely, 2^2666159868 is an apocalyptic number.

It is an amenable number.

2666159868 is an abundant number, since it is smaller than the sum of its proper divisors (3554879852).

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

2666159868 is a wasteful number, since it uses less digits than its factorization.

2666159868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 222179996 (or 222179994 counting only the distinct ones).

The product of its digits is 7464960, while the sum is 57.

The square root of 2666159868 is about 51634.8706592744. The cubic root of 2666159868 is about 1386.6346944931.

The spelling of 2666159868 in words is "two billion, six hundred sixty-six million, one hundred fifty-nine thousand, eight hundred sixty-eight".