6778143441378 has 24 divisors (see below), whose sum is σ = 14934892330800. Its totient is φ = 2221086551064.

The previous prime is 6778143441373. The next prime is 6778143441397. The reversal of 6778143441378 is 8731443418776.

It is a happy number.

6778143441378 is a `hidden beast` number, since 6 + 7 + 7 + 8 + 143 + 4 + 413 + 78 = 666.

It is a hoax number, since the sum of its digits (63) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (6778143441373) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3191215248 + ... + 3191217371.

It is an arithmetic number, because the mean of its divisors is an integer number (622287180450).

Almost surely, 2^{6778143441378} is an apocalyptic number.

6778143441378 is an abundant number, since it is smaller than the sum of its proper divisors (8156748889422).

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

6778143441378 is a wasteful number, since it uses less digits than its factorization.

6778143441378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6382432686 (or 6382432683 counting only the distinct ones).

The product of its digits is 75866112, while the sum is 63.

The spelling of 6778143441378 in words is "six trillion, seven hundred seventy-eight billion, one hundred forty-three million, four hundred forty-one thousand, three hundred seventy-eight".