797839165601 has 2 divisors, whose sum is σ = 797839165602. Its totient is φ = 797839165600.

The previous prime is 797839165597. The next prime is 797839165609. The reversal of 797839165601 is 106561938797.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 769023763600 + 28815402001 = 876940^2 + 169751^2 .

It is a cyclic number.

It is not a de Polignac number, because 797839165601 - 2² = 797839165597 is a prime.

It is not a weakly prime, because it can be changed into another prime (797839165609) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 398919582800 + 398919582801.

It is an arithmetic number, because the mean of its divisors is an integer number (398919582801).

Almost surely, 2^797839165601 is an apocalyptic number.

It is an amenable number.

797839165601 is a deficient number, since it is larger than the sum of its proper divisors (1).

797839165601 is an equidigital number, since it uses as much as digits as its factorization.

797839165601 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17146080, while the sum is 62.

The spelling of 797839165601 in words is "seven hundred ninety-seven billion, eight hundred thirty-nine million, one hundred sixty-five thousand, six hundred one".