97565656589 has 2 divisors, whose sum is σ = 97565656590. Its totient is φ = 97565656588.

The previous prime is 97565656511. The next prime is 97565656667. The reversal of 97565656589 is 98565656579.

It is a balanced prime because it is at equal distance from previous prime (97565656511) and next prime (97565656667).

It can be written as a sum of positive squares in only one way, i.e., 95950018564 + 1615638025 = 309758^2 + 40195^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-97565656589 is a prime.

It is a super-2 number, since 2×97565656589² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (97565656189) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48782828294 + 48782828295.

It is an arithmetic number, because the mean of its divisors is an integer number (48782828295).

Almost surely, 2^97565656589 is an apocalyptic number.

It is an amenable number.

97565656589 is a deficient number, since it is larger than the sum of its proper divisors (1).

97565656589 is an equidigital number, since it uses as much as digits as its factorization.

97565656589 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 612360000, while the sum is 71.

The spelling of 97565656589 in words is "ninety-seven billion, five hundred sixty-five million, six hundred fifty-six thousand, five hundred eighty-nine".