6378277778836 has 12 divisors (see below), whose sum is σ = 11184906005728. Its totient is φ = 3182590348632.

The previous prime is 6378277778783. The next prime is 6378277778839. The reversal of 6378277778836 is 6388777728736.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6378277778839) 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, 1637133006 + ... + 1637136901.

Almost surely, 2^{6378277778836} is an apocalyptic number.

It is an amenable number.

6378277778836 is a deficient number, since it is larger than the sum of its proper divisors (4806628226892).

6378277778836 is a wasteful number, since it uses less digits than its factorization.

6378277778836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3274270398 (or 3274270396 counting only the distinct ones).

The product of its digits is 5576159232, while the sum is 79.

The spelling of 6378277778836 in words is "six trillion, three hundred seventy-eight billion, two hundred seventy-seven million, seven hundred seventy-eight thousand, eight hundred thirty-six".