6678372738766 has 16 divisors (see below), whose sum is σ = 10022862299904. Its totient is φ = 3337418871864.

The previous prime is 6678372738761. The next prime is 6678372738781.

It is a happy number.

6678372738766 is nontrivially palindromic in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 6678372738692 and 6678372738701.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6678372738761) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 67393131 + ... + 67492153.

It is an arithmetic number, because the mean of its divisors is an integer number (626428893744).

Almost surely, 2^{6678372738766} is an apocalyptic number.

6678372738766 is a deficient number, since it is larger than the sum of its proper divisors (3344489561138).

6678372738766 is a wasteful number, since it uses less digits than its factorization.

6678372738766 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116535.

The product of its digits is 3584673792, while the sum is 76.

The spelling of 6678372738766 in words is "six trillion, six hundred seventy-eight billion, three hundred seventy-two million, seven hundred thirty-eight thousand, seven hundred sixty-six".