1669943680704 has 448 divisors, whose sum is σ = 5439247927680. Its totient is φ = 499077365760.

The previous prime is 1669943680687. The next prime is 1669943680729. The reversal of 1669943680704 is 4070863499661.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 609244774 + ... + 609247514.

It is an arithmetic number, because the mean of its divisors is an integer number (12141178410).

Almost surely, 2^{1669943680704} 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 1669943680704, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2719623963840).

1669943680704 is an abundant number, since it is smaller than the sum of its proper divisors (3769304246976).

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

1669943680704 is a wasteful number, since it uses less digits than its factorization.

1669943680704 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3545 (or 3529 counting only the distinct ones).

The product of its (nonzero) digits is 47029248, while the sum is 63.

The spelling of 1669943680704 in words is "one trillion, six hundred sixty-nine billion, nine hundred forty-three million, six hundred eighty thousand, seven hundred four".