659618394149 has 24 divisors (see below), whose sum is σ = 789868242432. Its totient is φ = 545943265920.

The previous prime is 659618394139. The next prime is 659618394157. The reversal of 659618394149 is 941493816956.

It is not a de Polignac number, because 659618394149 - 2⁸ = 659618393893 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (659618394139) 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 in 23 ways as a sum of consecutive naturals, for example, 2294597 + ... + 2566010.

It is an arithmetic number, because the mean of its divisors is an integer number (32911176768).

Almost surely, 2^659618394149 is an apocalyptic number.

It is an amenable number.

659618394149 is a deficient number, since it is larger than the sum of its proper divisors (130249848283).

659618394149 is a wasteful number, since it uses less digits than its factorization.

659618394149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4860717 (or 4860704 counting only the distinct ones).

The product of its digits is 50388480, while the sum is 65.

The spelling of 659618394149 in words is "six hundred fifty-nine billion, six hundred eighteen million, three hundred ninety-four thousand, one hundred forty-nine".