659342422230581 has 2 divisors, whose sum is σ = 659342422230582. Its totient is φ = 659342422230580.

The previous prime is 659342422230539. The next prime is 659342422230607. The reversal of 659342422230581 is 185032224243956.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 563204691380356 + 96137730850225 = 23731934^2 + 9804985^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-659342422230581 is a prime.

It is a super-2 number, since 2×659342422230581² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (659342422230511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 329671211115290 + 329671211115291.

It is an arithmetic number, because the mean of its divisors is an integer number (329671211115291).

Almost surely, 2^{659342422230581} is an apocalyptic number.

It is an amenable number.

659342422230581 is a deficient number, since it is larger than the sum of its proper divisors (1).

659342422230581 is an equidigital number, since it uses as much as digits as its factorization.

659342422230581 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24883200, while the sum is 56.

The spelling of 659342422230581 in words is "six hundred fifty-nine trillion, three hundred forty-two billion, four hundred twenty-two million, two hundred thirty thousand, five hundred eighty-one".