84797652642569 has 2 divisors, whose sum is σ = 84797652642570. Its totient is φ = 84797652642568.

The previous prime is 84797652642553. The next prime is 84797652642631. The reversal of 84797652642569 is 96524625679748.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 45409915961344 + 39387736681225 = 6738688^2 + 6275965^2 .

It is a cyclic number.

It is not a de Polignac number, because 84797652642569 - 2⁴ = 84797652642553 is a prime.

It is a super-2 number, since 2×84797652642569² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 84797652642493 and 84797652642502.

It is not a weakly prime, because it can be changed into another prime (84797652645569) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42398826321284 + 42398826321285.

It is an arithmetic number, because the mean of its divisors is an integer number (42398826321285).

Almost surely, 2^{84797652642569} is an apocalyptic number.

It is an amenable number.

84797652642569 is a deficient number, since it is larger than the sum of its proper divisors (1).

84797652642569 is an equidigital number, since it uses as much as digits as its factorization.

84797652642569 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10973491200, while the sum is 80.

The spelling of 84797652642569 in words is "eighty-four trillion, seven hundred ninety-seven billion, six hundred fifty-two million, six hundred forty-two thousand, five hundred sixty-nine".