2668318312699 has 16 divisors (see below), whose sum is σ = 3092486130720. Its totient is φ = 2280174082560.

The previous prime is 2668318312691. The next prime is 2668318312703. The reversal of 2668318312699 is 9962138138662.

It is a cyclic number.

It is not a de Polignac number, because 2668318312699 - 2³ = 2668318312691 is a prime.

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 2668318312699.

It is not an unprimeable number, because it can be changed into a prime (2668318312691) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 98952409 + ... + 98979370.

It is an arithmetic number, because the mean of its divisors is an integer number (193280383170).

Almost surely, 2^{2668318312699} is an apocalyptic number.

2668318312699 is a deficient number, since it is larger than the sum of its proper divisors (424167818021).

2668318312699 is a wasteful number, since it uses less digits than its factorization.

2668318312699 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 197931870.

The product of its digits is 40310784, while the sum is 64.

The spelling of 2668318312699 in words is "two trillion, six hundred sixty-eight billion, three hundred eighteen million, three hundred twelve thousand, six hundred ninety-nine".