6778660016 has 10 divisors (see below), whose sum is σ = 13133653812. Its totient is φ = 3389330000.

The previous prime is 6778659997. The next prime is 6778660079. The reversal of 6778660016 is 6100668776.

It is a super-2 number, since 2×6778660016² = 91900463225034240512, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 211833110 + ... + 211833141.

Almost surely, 2^6778660016 is an apocalyptic number.

It is an amenable number.

6778660016 is a deficient number, since it is larger than the sum of its proper divisors (6354993796).

6778660016 is a wasteful number, since it uses less digits than its factorization.

6778660016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 423666259 (or 423666253 counting only the distinct ones).

The product of its (nonzero) digits is 508032, while the sum is 47.

The square root of 6778660016 is about 82332.6181777308. The cubic root of 6778660016 is about 1892.5525653420.

The spelling of 6778660016 in words is "six billion, seven hundred seventy-eight million, six hundred sixty thousand, sixteen".