9678657106189 has 2 divisors, whose sum is σ = 9678657106190. Its totient is φ = 9678657106188.

The previous prime is 9678657106171. The next prime is 9678657106231. The reversal of 9678657106189 is 9816017568769.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5319790022089 + 4358867084100 = 2306467^2 + 2087790^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9678657106189 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9678657106169) 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, 4839328553094 + 4839328553095.

It is an arithmetic number, because the mean of its divisors is an integer number (4839328553095).

Almost surely, 2^{9678657106189} is an apocalyptic number.

It is an amenable number.

9678657106189 is a deficient number, since it is larger than the sum of its proper divisors (1).

9678657106189 is an equidigital number, since it uses as much as digits as its factorization.

9678657106189 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 274337280, while the sum is 73.

The spelling of 9678657106189 in words is "nine trillion, six hundred seventy-eight billion, six hundred fifty-seven million, one hundred six thousand, one hundred eighty-nine".