67397568835897 has 2 divisors, whose sum is σ = 67397568835898. Its totient is φ = 67397568835896.

The previous prime is 67397568835889. The next prime is 67397568836023. The reversal of 67397568835897 is 79853886579376.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 60747854516281 + 6649714319616 = 7794091^2 + 2578704^2 .

It is a cyclic number.

It is not a de Polignac number, because 67397568835897 - 2³ = 67397568835889 is a prime.

It is not a weakly prime, because it can be changed into another prime (67397568832897) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33698784417948 + 33698784417949.

It is an arithmetic number, because the mean of its divisors is an integer number (33698784417949).

Almost surely, 2^{67397568835897} is an apocalyptic number.

It is an amenable number.

67397568835897 is a deficient number, since it is larger than the sum of its proper divisors (1).

67397568835897 is an equidigital number, since it uses as much as digits as its factorization.

67397568835897 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 115221657600, while the sum is 91.

The spelling of 67397568835897 in words is "sixty-seven trillion, three hundred ninety-seven billion, five hundred sixty-eight million, eight hundred thirty-five thousand, eight hundred ninety-seven".