1065718197697 has 2 divisors, whose sum is σ = 1065718197698. Its totient is φ = 1065718197696.

The previous prime is 1065718197673. The next prime is 1065718197779. The reversal of 1065718197697 is 7967918175601.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1065676323856 + 41873841 = 1032316^2 + 6471^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1065718197697 is a prime.

It is a super-2 number, since 2×1065718197697² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1065718197097) 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, 532859098848 + 532859098849.

It is an arithmetic number, because the mean of its divisors is an integer number (532859098849).

Almost surely, 2^{1065718197697} is an apocalyptic number.

It is an amenable number.

1065718197697 is a deficient number, since it is larger than the sum of its proper divisors (1).

1065718197697 is an equidigital number, since it uses as much as digits as its factorization.

1065718197697 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 40007520, while the sum is 67.

The spelling of 1065718197697 in words is "one trillion, sixty-five billion, seven hundred eighteen million, one hundred ninety-seven thousand, six hundred ninety-seven".