797982289729 has 2 divisors, whose sum is σ = 797982289730. Its totient is φ = 797982289728.

The previous prime is 797982289723. The next prime is 797982289733. The reversal of 797982289729 is 927982289797.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 495542786704 + 302439503025 = 703948^2 + 549945^2 .

It is an emirp because it is prime and its reverse (927982289797) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 797982289729 - 2⁵ = 797982289697 is a prime.

It is a super-2 number, since 2×797982289729² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (797982289723) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 398991144864 + 398991144865.

It is an arithmetic number, because the mean of its divisors is an integer number (398991144865).

Almost surely, 2^797982289729 is an apocalyptic number.

It is an amenable number.

797982289729 is a deficient number, since it is larger than the sum of its proper divisors (1).

797982289729 is an equidigital number, since it uses as much as digits as its factorization.

797982289729 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1152216576, while the sum is 79.

The spelling of 797982289729 in words is "seven hundred ninety-seven billion, nine hundred eighty-two million, two hundred eighty-nine thousand, seven hundred twenty-nine".