2668611878016 has 256 divisors, whose sum is σ = 8633235087360. Its totient is φ = 713792065536.

The previous prime is 2668611877979. The next prime is 2668611878087. The reversal of 2668611878016 is 6108781168662.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2446530 + ... + 3364926.

It is an arithmetic number, because the mean of its divisors is an integer number (33723574560).

Almost surely, 2^{2668611878016} 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 2668611878016, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4316617543680).

2668611878016 is an abundant number, since it is smaller than the sum of its proper divisors (5964623209344).

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

2668611878016 is a wasteful number, since it uses less digits than its factorization.

2668611878016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 918491 (or 918479 counting only the distinct ones).

The product of its (nonzero) digits is 9289728, while the sum is 60.

The spelling of 2668611878016 in words is "two trillion, six hundred sixty-eight billion, six hundred eleven million, eight hundred seventy-eight thousand, sixteen".