659198243689 has 2 divisors, whose sum is σ = 659198243690. Its totient is φ = 659198243688.

The previous prime is 659198243687. The next prime is 659198243699. The reversal of 659198243689 is 986342891956.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 559515968064 + 99682275625 = 748008^2 + 315725^2 .

It is a cyclic number.

It is not a de Polignac number, because 659198243689 - 2¹ = 659198243687 is a prime.

Together with 659198243687, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (659198243687) 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, 329599121844 + 329599121845.

It is an arithmetic number, because the mean of its divisors is an integer number (329599121845).

Almost surely, 2^659198243689 is an apocalyptic number.

It is an amenable number.

659198243689 is a deficient number, since it is larger than the sum of its proper divisors (1).

659198243689 is an equidigital number, since it uses as much as digits as its factorization.

659198243689 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 201553920, while the sum is 70.

The spelling of 659198243689 in words is "six hundred fifty-nine billion, one hundred ninety-eight million, two hundred forty-three thousand, six hundred eighty-nine".