669820093379 has 4 divisors (see below), whose sum is σ = 687923339184. Its totient is φ = 651716847576.

The previous prime is 669820093307. The next prime is 669820093441. The reversal of 669820093379 is 973390028966.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 669820093379 - 2¹⁶ = 669820027843 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (669820093279) 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, 9051622847 + ... + 9051622920.

It is an arithmetic number, because the mean of its divisors is an integer number (171980834796).

Almost surely, 2^669820093379 is an apocalyptic number.

669820093379 is a deficient number, since it is larger than the sum of its proper divisors (18103245805).

669820093379 is a wasteful number, since it uses less digits than its factorization.

669820093379 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18103245804.

The product of its (nonzero) digits is 26453952, while the sum is 62.

The spelling of 669820093379 in words is "six hundred sixty-nine billion, eight hundred twenty million, ninety-three thousand, three hundred seventy-nine".