6778143441377 has 16 divisors (see below), whose sum is σ = 8947770717312. Its totient is φ = 4970983729920.

The previous prime is 6778143441373. The next prime is 6778143441397. The reversal of 6778143441377 is 7731443418776.

It is a cyclic number.

It is not a de Polignac number, because 6778143441377 - 2² = 6778143441373 is a prime.

It is a super-2 number, since 2×6778143441377² (a number of 26 digits) contains 22 as substring.

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 15 ways as a sum of consecutive naturals, for example, 2589052718 + ... + 2589055335.

It is an arithmetic number, because the mean of its divisors is an integer number (559235669832).

Almost surely, 2^{6778143441377} is an apocalyptic number.

It is an amenable number.

6778143441377 is a deficient number, since it is larger than the sum of its proper divisors (2169627275935).

6778143441377 is a wasteful number, since it uses less digits than its factorization.

6778143441377 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5178108088.

The product of its digits is 66382848, while the sum is 62.

The spelling of 6778143441377 in words is "six trillion, seven hundred seventy-eight billion, one hundred forty-three million, four hundred forty-one thousand, three hundred seventy-seven".