6678468370061 has 2 divisors, whose sum is σ = 6678468370062. Its totient is φ = 6678468370060.

The previous prime is 6678468370043. The next prime is 6678468370141. The reversal of 6678468370061 is 1600738648766.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4322261790025 + 2356206580036 = 2079005^2 + 1534994^2 .

It is a cyclic number.

It is not a de Polignac number, because 6678468370061 - 2³⁸ = 6403590463117 is a prime.

It is a super-2 number, since 2×6678468370061² (a number of 26 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 6678468369976 and 6678468370003.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6678468370961) 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 as a sum of consecutive naturals, namely, 3339234185030 + 3339234185031.

It is an arithmetic number, because the mean of its divisors is an integer number (3339234185031).

Almost surely, 2^{6678468370061} is an apocalyptic number.

It is an amenable number.

6678468370061 is a deficient number, since it is larger than the sum of its proper divisors (1).

6678468370061 is an equidigital number, since it uses as much as digits as its factorization.

6678468370061 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48771072, while the sum is 62.

The spelling of 6678468370061 in words is "six trillion, six hundred seventy-eight billion, four hundred sixty-eight million, three hundred seventy thousand, sixty-one".