6378687788 has 18 divisors (see below), whose sum is σ = 12269749548. Its totient is φ = 2899403320.

The previous prime is 6378687787. The next prime is 6378687823. The reversal of 6378687788 is 8877868736.

It is not an unprimeable number, because it can be changed into a prime (6378687787) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6589070 + ... + 6590037.

Almost surely, 2^6378687788 is an apocalyptic number.

It is an amenable number.

6378687788 is a deficient number, since it is larger than the sum of its proper divisors (5891061760).

6378687788 is a wasteful number, since it uses less digits than its factorization.

6378687788 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13179133 (or 13179120 counting only the distinct ones).

The product of its digits is 151732224, while the sum is 68.

The square root of 6378687788 is about 79866.6875987730. The cubic root of 6378687788 is about 1854.5723556550.

The spelling of 6378687788 in words is "six billion, three hundred seventy-eight million, six hundred eighty-seven thousand, seven hundred eighty-eight".