845564465597 has 2 divisors, whose sum is σ = 845564465598. Its totient is φ = 845564465596.

The previous prime is 845564465579. The next prime is 845564465633. The reversal of 845564465597 is 795564465548.

Together with previous prime (845564465579) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 690512802841 + 155051662756 = 830971^2 + 393766^2 .

It is a cyclic number.

It is not a de Polignac number, because 845564465597 - 2²² = 845560271293 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (845564465797) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 422782232798 + 422782232799.

It is an arithmetic number, because the mean of its divisors is an integer number (422782232799).

Almost surely, 2^845564465597 is an apocalyptic number.

It is an amenable number.

845564465597 is a deficient number, since it is larger than the sum of its proper divisors (1).

845564465597 is an equidigital number, since it uses as much as digits as its factorization.

845564465597 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 725760000, while the sum is 68.

The spelling of 845564465597 in words is "eight hundred forty-five billion, five hundred sixty-four million, four hundred sixty-five thousand, five hundred ninety-seven".