669159788317 has 4 divisors (see below), whose sum is σ = 669343475680. Its totient is φ = 668976100956.

The previous prime is 669159788303. The next prime is 669159788333. The reversal of 669159788317 is 713887951966.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-669159788317 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 (669159788357) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 91838217 + ... + 91845502.

It is an arithmetic number, because the mean of its divisors is an integer number (167335868920).

Almost surely, 2^669159788317 is an apocalyptic number.

It is an amenable number.

669159788317 is a deficient number, since it is larger than the sum of its proper divisors (183687363).

669159788317 is a wasteful number, since it uses less digits than its factorization.

669159788317 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 183687362.

The product of its digits is 137168640, while the sum is 70.

The spelling of 669159788317 in words is "six hundred sixty-nine billion, one hundred fifty-nine million, seven hundred eighty-eight thousand, three hundred seventeen".