669193075309 has 4 divisors (see below), whose sum is σ = 730028809440. Its totient is φ = 608357341180.

The previous prime is 669193075289. The next prime is 669193075349. The reversal of 669193075309 is 903570391966.

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 not a de Polignac number, because 669193075309 - 2¹⁹ = 669192551021 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 (669193075349) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30417867049 + ... + 30417867070.

It is an arithmetic number, because the mean of its divisors is an integer number (182507202360).

Almost surely, 2^669193075309 is an apocalyptic number.

It is an amenable number.

669193075309 is a deficient number, since it is larger than the sum of its proper divisors (60835734131).

669193075309 is a wasteful number, since it uses less digits than its factorization.

669193075309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60835734130.

The product of its (nonzero) digits is 8266860, while the sum is 58.

The spelling of 669193075309 in words is "six hundred sixty-nine billion, one hundred ninety-three million, seventy-five thousand, three hundred nine".