6609680823665 has 8 divisors (see below), whose sum is σ = 7994070666240. Its totient is φ = 5246108873712.

The previous prime is 6609680823659. The next prime is 6609680823673. The reversal of 6609680823665 is 5663280869066.

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-6609680823665 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5204472455 + ... + 5204473724.

It is an arithmetic number, because the mean of its divisors is an integer number (999258833280).

Almost surely, 2^{6609680823665} is an apocalyptic number.

It is an amenable number.

6609680823665 is a deficient number, since it is larger than the sum of its proper divisors (1384389842575).

6609680823665 is a wasteful number, since it uses less digits than its factorization.

6609680823665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10408946311.

The product of its (nonzero) digits is 134369280, while the sum is 65.

The spelling of 6609680823665 in words is "six trillion, six hundred nine billion, six hundred eighty million, eight hundred twenty-three thousand, six hundred sixty-five".