67397197324817 has 2 divisors, whose sum is σ = 67397197324818. Its totient is φ = 67397197324816.

The previous prime is 67397197324799. The next prime is 67397197324823. The reversal of 67397197324817 is 71842379179376.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 57862250012176 + 9534947312641 = 7606724^2 + 3087871^2 .

It is a cyclic number.

It is not a de Polignac number, because 67397197324817 - 2¹⁸ = 67397197062673 is a prime.

It is not a weakly prime, because it can be changed into another prime (67397197324117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33698598662408 + 33698598662409.

It is an arithmetic number, because the mean of its divisors is an integer number (33698598662409).

Almost surely, 2^{67397197324817} is an apocalyptic number.

It is an amenable number.

67397197324817 is a deficient number, since it is larger than the sum of its proper divisors (1).

67397197324817 is an equidigital number, since it uses as much as digits as its factorization.

67397197324817 is an evil number, because the sum of its binary digits is even.

The product of its digits is 672126336, while the sum is 74.

The spelling of 67397197324817 in words is "sixty-seven trillion, three hundred ninety-seven billion, one hundred ninety-seven million, three hundred twenty-four thousand, eight hundred seventeen".