2066130664669 has 4 divisors (see below), whose sum is σ = 2071983726396. Its totient is φ = 2060277602944.

The previous prime is 2066130664651. The next prime is 2066130664733. The reversal of 2066130664669 is 9664660316602.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 867204212644 + 1198926452025 = 931238^2 + 1094955^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2066130664669 is a prime.

It is a super-2 number, since 2×2066130664669² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2066130664369) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2926530334 + ... + 2926531039.

It is an arithmetic number, because the mean of its divisors is an integer number (517995931599).

Almost surely, 2^{2066130664669} is an apocalyptic number.

It is an amenable number.

2066130664669 is a deficient number, since it is larger than the sum of its proper divisors (5853061727).

2066130664669 is an equidigital number, since it uses as much as digits as its factorization.

2066130664669 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5853061726.

The product of its (nonzero) digits is 10077696, while the sum is 55.

The spelling of 2066130664669 in words is "two trillion, sixty-six billion, one hundred thirty million, six hundred sixty-four thousand, six hundred sixty-nine".