2668778799 has 8 divisors (see below), whose sum is σ = 3561058560. Its totient is φ = 1777842456.

The previous prime is 2668778771. The next prime is 2668778807. The reversal of 2668778799 is 9978778662.

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

It is not a de Polignac number, because 2668778799 - 2⁸ = 2668778543 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2668778729) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 331209 + ... + 339170.

It is an arithmetic number, because the mean of its divisors is an integer number (445132320).

Almost surely, 2^2668778799 is an apocalyptic number.

2668778799 is a deficient number, since it is larger than the sum of its proper divisors (892279761).

2668778799 is a wasteful number, since it uses less digits than its factorization.

2668778799 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 671709.

The product of its digits is 128024064, while the sum is 69.

The square root of 2668778799 is about 51660.2245349360. The cubic root of 2668778799 is about 1387.0885697742.

The spelling of 2668778799 in words is "two billion, six hundred sixty-eight million, seven hundred seventy-eight thousand, seven hundred ninety-nine".