6718689667798 has 8 divisors (see below), whose sum is σ = 10425552932880. Its totient is φ = 3243505356840.

The previous prime is 6718689667783. The next prime is 6718689667799. The reversal of 6718689667798 is 8977669868176.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6718689667799) 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, 57919738458 + ... + 57919738573.

It is an arithmetic number, because the mean of its divisors is an integer number (1303194116610).

Almost surely, 2^{6718689667798} is an apocalyptic number.

6718689667798 is a deficient number, since it is larger than the sum of its proper divisors (3706863265082).

6718689667798 is a wasteful number, since it uses less digits than its factorization.

6718689667798 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115839477062.

The product of its digits is 18435465216, while the sum is 88.

The spelling of 6718689667798 in words is "six trillion, seven hundred eighteen billion, six hundred eighty-nine million, six hundred sixty-seven thousand, seven hundred ninety-eight".