9120683968681 has 2 divisors, whose sum is σ = 9120683968682. Its totient is φ = 9120683968680.

The previous prime is 9120683968657. The next prime is 9120683968727. The reversal of 9120683968681 is 1868693860219.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9120641601600 + 42367081 = 3020040^2 + 6509^2 .

It is a cyclic number.

It is not a de Polignac number, because 9120683968681 - 2²⁷ = 9120549750953 is a prime.

It is a super-2 number, since 2×9120683968681² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (9120683968481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4560341984340 + 4560341984341.

It is an arithmetic number, because the mean of its divisors is an integer number (4560341984341).

Almost surely, 2^{9120683968681} is an apocalyptic number.

It is an amenable number.

9120683968681 is a deficient number, since it is larger than the sum of its proper divisors (1).

9120683968681 is an equidigital number, since it uses as much as digits as its factorization.

9120683968681 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 53747712, while the sum is 67.

The spelling of 9120683968681 in words is "nine trillion, one hundred twenty billion, six hundred eighty-three million, nine hundred sixty-eight thousand, six hundred eighty-one".