669389759616 has 256 divisors, whose sum is σ = 1964020608000. Its totient is φ = 201273397248.

The previous prime is 669389759579. The next prime is 669389759651. The reversal of 669389759616 is 616957983966.

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 31 ways as a sum of consecutive naturals, for example, 10983115 + ... + 11043893.

It is an arithmetic number, because the mean of its divisors is an integer number (7671955500).

Almost surely, 2^669389759616 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 669389759616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (982010304000).

669389759616 is an abundant number, since it is smaller than the sum of its proper divisors (1294630848384).

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

669389759616 is a wasteful number, since it uses less digits than its factorization.

669389759616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60891 (or 60879 counting only the distinct ones).

The product of its digits is 793618560, while the sum is 75.

The spelling of 669389759616 in words is "six hundred sixty-nine billion, three hundred eighty-nine million, seven hundred fifty-nine thousand, six hundred sixteen".