16006611056669 has 2 divisors, whose sum is σ = 16006611056670. Its totient is φ = 16006611056668.

The previous prime is 16006611056651. The next prime is 16006611056707. The reversal of 16006611056669 is 96665011660061.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10692834600100 + 5313776456569 = 3269990^2 + 2305163^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16006611056669 is a prime.

It is a super-2 number, since 2×16006611056669² (a number of 27 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 16006611056669.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16006611056269) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8003305528334 + 8003305528335.

It is an arithmetic number, because the mean of its divisors is an integer number (8003305528335).

Almost surely, 2^{16006611056669} is an apocalyptic number.

It is an amenable number.

16006611056669 is a deficient number, since it is larger than the sum of its proper divisors (1).

16006611056669 is an equidigital number, since it uses as much as digits as its factorization.

16006611056669 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2099520, while the sum is 53.

The spelling of 16006611056669 in words is "sixteen trillion, six billion, six hundred eleven million, fifty-six thousand, six hundred sixty-nine".