6665655210611 has 8 divisors (see below), whose sum is σ = 6673921024320. Its totient is φ = 6657389941248.

The previous prime is 6665655210589. The next prime is 6665655210649. The reversal of 6665655210611 is 1160125565666.

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 not a de Polignac number, because 6665655210611 - 2²² = 6665651016307 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 6665655210611.

It is not an unprimeable number, because it can be changed into a prime (6665655210811) 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, 27948710 + ... + 28186196.

It is an arithmetic number, because the mean of its divisors is an integer number (834240128040).

Almost surely, 2^{6665655210611} is an apocalyptic number.

6665655210611 is a deficient number, since it is larger than the sum of its proper divisors (8265813709).

6665655210611 is a wasteful number, since it uses less digits than its factorization.

6665655210611 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 272173.

The product of its (nonzero) digits is 1944000, while the sum is 50.

The spelling of 6665655210611 in words is "six trillion, six hundred sixty-five billion, six hundred fifty-five million, two hundred ten thousand, six hundred eleven".