6378666668736 has 56 divisors (see below), whose sum is σ = 17114591591424. Its totient is φ = 2096275426560.

The previous prime is 6378666668723. The next prime is 6378666668779.

It is a happy number.

6378666668736 is nontrivially palindromic in base 10.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 233945680 + ... + 233972943.

Almost surely, 2^{6378666668736} is an apocalyptic number.

It is an amenable number.

6378666668736 is an abundant number, since it is smaller than the sum of its proper divisors (10735924922688).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6378666668736 is a wasteful number, since it uses less digits than its factorization.

6378666668736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 467918709 (or 467918699 counting only the distinct ones).

The product of its digits is 7900913664, while the sum is 78.

The spelling of 6378666668736 in words is "six trillion, three hundred seventy-eight billion, six hundred sixty-six million, six hundred sixty-eight thousand, seven hundred thirty-six".