6678914198766 has 16 divisors (see below), whose sum is σ = 13381554564864. Its totient is φ = 2222350371704.

The previous prime is 6678914198717. The next prime is 6678914198767.

6678914198766 is nontrivially palindromic in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 6678914198691 and 6678914198700.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6678914198767) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 988586646 + ... + 988593401.

It is an arithmetic number, because the mean of its divisors is an integer number (836347160304).

Almost surely, 2^{6678914198766} is an apocalyptic number.

6678914198766 is an abundant number, since it is smaller than the sum of its proper divisors (6702640366098).

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

6678914198766 is a wasteful number, since it uses less digits than its factorization.

6678914198766 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1977180615.

The product of its digits is 1316818944, while the sum is 78.

The spelling of 6678914198766 in words is "six trillion, six hundred seventy-eight billion, nine hundred fourteen million, one hundred ninety-eight thousand, seven hundred sixty-six".