67560563367161 has 2 divisors, whose sum is σ = 67560563367162. Its totient is φ = 67560563367160.

The previous prime is 67560563367131. The next prime is 67560563367197. The reversal of 67560563367161 is 16176336506576.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 47576623651561 + 19983939715600 = 6897581^2 + 4470340^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-67560563367161 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 67560563367094 and 67560563367103.

It is not a weakly prime, because it can be changed into another prime (67560563367131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33780281683580 + 33780281683581.

It is an arithmetic number, because the mean of its divisors is an integer number (33780281683581).

Almost surely, 2^{67560563367161} is an apocalyptic number.

It is an amenable number.

67560563367161 is a deficient number, since it is larger than the sum of its proper divisors (1).

67560563367161 is an equidigital number, since it uses as much as digits as its factorization.

67560563367161 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 85730400, while the sum is 62.

The spelling of 67560563367161 in words is "sixty-seven trillion, five hundred sixty billion, five hundred sixty-three million, three hundred sixty-seven thousand, one hundred sixty-one".