89665162417 has 2 divisors, whose sum is σ = 89665162418. Its totient is φ = 89665162416.

The previous prime is 89665162403. The next prime is 89665162451. The reversal of 89665162417 is 71426156698.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 74218649761 + 15446512656 = 272431^2 + 124284^2 .

It is a cyclic number.

It is not a de Polignac number, because 89665162417 - 2⁷ = 89665162289 is a prime.

It is not a weakly prime, because it can be changed into another prime (89665162487) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44832581208 + 44832581209.

It is an arithmetic number, because the mean of its divisors is an integer number (44832581209).

Almost surely, 2^89665162417 is an apocalyptic number.

It is an amenable number.

89665162417 is a deficient number, since it is larger than the sum of its proper divisors (1).

89665162417 is an equidigital number, since it uses as much as digits as its factorization.

89665162417 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4354560, while the sum is 55.

The spelling of 89665162417 in words is "eighty-nine billion, six hundred sixty-five million, one hundred sixty-two thousand, four hundred seventeen".