845321832617 has 2 divisors, whose sum is σ = 845321832618. Its totient is φ = 845321832616.

The previous prime is 845321832583. The next prime is 845321832637. The reversal of 845321832617 is 716238123548.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 423431312656 + 421890519961 = 650716^2 + 649531^2 .

It is a cyclic number.

It is not a de Polignac number, because 845321832617 - 2¹⁸ = 845321570473 is a prime.

It is not a weakly prime, because it can be changed into another prime (845321832637) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 422660916308 + 422660916309.

It is an arithmetic number, because the mean of its divisors is an integer number (422660916309).

Almost surely, 2^845321832617 is an apocalyptic number.

It is an amenable number.

845321832617 is a deficient number, since it is larger than the sum of its proper divisors (1).

845321832617 is an equidigital number, since it uses as much as digits as its factorization.

845321832617 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1935360, while the sum is 50.

The spelling of 845321832617 in words is "eight hundred forty-five billion, three hundred twenty-one million, eight hundred thirty-two thousand, six hundred seventeen".