1006660061669 has 2 divisors, whose sum is σ = 1006660061670. Its totient is φ = 1006660061668.

The previous prime is 1006660061653. The next prime is 1006660061677. The reversal of 1006660061669 is 9661600666001.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 935015509444 + 71644552225 = 966962^2 + 267665^2 .

It is an emirp because it is prime and its reverse (9661600666001) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1006660061669 - 2⁴ = 1006660061653 is a prime.

It is a super-2 number, since 2×1006660061669² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1006660061609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 503330030834 + 503330030835.

It is an arithmetic number, because the mean of its divisors is an integer number (503330030835).

Almost surely, 2^{1006660061669} is an apocalyptic number.

It is an amenable number.

1006660061669 is a deficient number, since it is larger than the sum of its proper divisors (1).

1006660061669 is an equidigital number, since it uses as much as digits as its factorization.

1006660061669 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 419904, while the sum is 47.

The spelling of 1006660061669 in words is "one trillion, six billion, six hundred sixty million, sixty-one thousand, six hundred sixty-nine".