2668677333991 has 8 divisors (see below), whose sum is σ = 2815651756800. Its totient is φ = 2522354683320.

The previous prime is 2668677333977. The next prime is 2668677334007. The reversal of 2668677333991 is 1993337768662.

It is a happy number.

2668677333991 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2668677333991 - 2⁹ = 2668677333479 is a prime.

It is a super-2 number, since 2×2668677333991² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2668677333991.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2668677333901) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 162934621 + ... + 162950998.

It is an arithmetic number, because the mean of its divisors is an integer number (351956469600).

Almost surely, 2^{2668677333991} is an apocalyptic number.

2668677333991 is a deficient number, since it is larger than the sum of its proper divisors (146974422809).

2668677333991 is a wasteful number, since it uses less digits than its factorization.

2668677333991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 325886069.

The product of its digits is 370355328, while the sum is 70.

The spelling of 2668677333991 in words is "two trillion, six hundred sixty-eight billion, six hundred seventy-seven million, three hundred thirty-three thousand, nine hundred ninety-one".