68797165897 has 2 divisors, whose sum is σ = 68797165898. Its totient is φ = 68797165896.

The previous prime is 68797165841. The next prime is 68797165903. The reversal of 68797165897 is 79856179786.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 41581735056 + 27215430841 = 203916^2 + 164971^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-68797165897 is a prime.

It is not a weakly prime, because it can be changed into another prime (68797165837) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34398582948 + 34398582949.

It is an arithmetic number, because the mean of its divisors is an integer number (34398582949).

Almost surely, 2^68797165897 is an apocalyptic number.

It is an amenable number.

68797165897 is a deficient number, since it is larger than the sum of its proper divisors (1).

68797165897 is an equidigital number, since it uses as much as digits as its factorization.

68797165897 is an evil number, because the sum of its binary digits is even.

The product of its digits is 320060160, while the sum is 73.

The spelling of 68797165897 in words is "sixty-eight billion, seven hundred ninety-seven million, one hundred sixty-five thousand, eight hundred ninety-seven".