2668705760489 has 4 divisors (see below), whose sum is σ = 2682116342400. Its totient is φ = 2655295178580.

The previous prime is 2668705760477. The next prime is 2668705760527. The reversal of 2668705760489 is 9840675078662.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2668705760489 - 2²⁰ = 2668704711913 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2668705760459) 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, 6705290657 + ... + 6705291054.

It is an arithmetic number, because the mean of its divisors is an integer number (670529085600).

Almost surely, 2^{2668705760489} is an apocalyptic number.

It is an amenable number.

2668705760489 is a deficient number, since it is larger than the sum of its proper divisors (13410581911).

2668705760489 is a wasteful number, since it uses less digits than its factorization.

2668705760489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13410581910.

The product of its (nonzero) digits is 243855360, while the sum is 68.

The spelling of 2668705760489 in words is "two trillion, six hundred sixty-eight billion, seven hundred five million, seven hundred sixty thousand, four hundred eighty-nine".