16670603560661 has 8 divisors (see below), whose sum is σ = 16702674932160. Its totient is φ = 16638532939872.

The previous prime is 16670603560651. The next prime is 16670603560697. The reversal of 16670603560661 is 16606530607661.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16670603560661 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 (16670603560651) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 68081696 + ... + 68326118.

It is an arithmetic number, because the mean of its divisors is an integer number (2087834366520).

Almost surely, 2^{16670603560661} is an apocalyptic number.

It is an amenable number.

16670603560661 is a deficient number, since it is larger than the sum of its proper divisors (32071371499).

16670603560661 is a wasteful number, since it uses less digits than its factorization.

16670603560661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 375355.

The product of its (nonzero) digits is 4898880, while the sum is 53.

The spelling of 16670603560661 in words is "sixteen trillion, six hundred seventy billion, six hundred three million, five hundred sixty thousand, six hundred sixty-one".