669317713968 has 20 divisors (see below), whose sum is σ = 1729070761208. Its totient is φ = 223105904640.

The previous prime is 669317713951. The next prime is 669317714011. The reversal of 669317713968 is 869317713966.

It is a junction number, because it is equal to n+sod(n) for n = 669317713899 and 669317713908.

It is an unprimeable number.

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, 6972059473 + ... + 6972059568.

Almost surely, 2^669317713968 is an apocalyptic number.

It is an amenable number.

669317713968 is an abundant number, since it is smaller than the sum of its proper divisors (1059753047240).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

669317713968 is a wasteful number, since it uses less digits than its factorization.

669317713968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13944119052 (or 13944119046 counting only the distinct ones).

The product of its digits is 61725888, while the sum is 66.

The spelling of 669317713968 in words is "six hundred sixty-nine billion, three hundred seventeen million, seven hundred thirteen thousand, nine hundred sixty-eight".