84797652645569 has 2 divisors, whose sum is σ = 84797652645570. Its totient is φ = 84797652645568.

The previous prime is 84797652645499. The next prime is 84797652645623. The reversal of 84797652645569 is 96554625679748.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 84065738175169 + 731914470400 = 9168737^2 + 855520^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-84797652645569 is a prime.

It is a super-2 number, since 2×84797652645569² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (84797652645169) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42398826322784 + 42398826322785.

It is an arithmetic number, because the mean of its divisors is an integer number (42398826322785).

Almost surely, 2^{84797652645569} is an apocalyptic number.

It is an amenable number.

84797652645569 is a deficient number, since it is larger than the sum of its proper divisors (1).

84797652645569 is an equidigital number, since it uses as much as digits as its factorization.

84797652645569 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 27433728000, while the sum is 83.

The spelling of 84797652645569 in words is "eighty-four trillion, seven hundred ninety-seven billion, six hundred fifty-two million, six hundred forty-five thousand, five hundred sixty-nine".