89315817823217 has 2 divisors, whose sum is σ = 89315817823218. Its totient is φ = 89315817823216.

The previous prime is 89315817823159. The next prime is 89315817823241. The reversal of 89315817823217 is 71232871851398.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 83152495202401 + 6163322620816 = 9118799^2 + 2482604^2 .

It is a cyclic number.

It is not a de Polignac number, because 89315817823217 - 2¹⁴ = 89315817806833 is a prime.

It is not a weakly prime, because it can be changed into another prime (89315817823717) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44657908911608 + 44657908911609.

It is an arithmetic number, because the mean of its divisors is an integer number (44657908911609).

Almost surely, 2^{89315817823217} is an apocalyptic number.

It is an amenable number.

89315817823217 is a deficient number, since it is larger than the sum of its proper divisors (1).

89315817823217 is an equidigital number, since it uses as much as digits as its factorization.

89315817823217 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 40642560, while the sum is 65.

The spelling of 89315817823217 in words is "eighty-nine trillion, three hundred fifteen billion, eight hundred seventeen million, eight hundred twenty-three thousand, two hundred seventeen".