171064677689 has 2 divisors, whose sum is σ = 171064677690. Its totient is φ = 171064677688.

The previous prime is 171064677673. The next prime is 171064677713. The reversal of 171064677689 is 986776460171.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 166029356089 + 5035321600 = 407467^2 + 70960^2 .

It is a cyclic number.

It is not a de Polignac number, because 171064677689 - 2⁴ = 171064677673 is a prime.

It is not a weakly prime, because it can be changed into another prime (171064677089) 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, 85532338844 + 85532338845.

It is an arithmetic number, because the mean of its divisors is an integer number (85532338845).

Almost surely, 2^171064677689 is an apocalyptic number.

It is an amenable number.

171064677689 is a deficient number, since it is larger than the sum of its proper divisors (1).

171064677689 is an equidigital number, since it uses as much as digits as its factorization.

171064677689 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 21337344, while the sum is 62.

The spelling of 171064677689 in words is "one hundred seventy-one billion, sixty-four million, six hundred seventy-seven thousand, six hundred eighty-nine".