8666969477471 has 2 divisors, whose sum is σ = 8666969477472. Its totient is φ = 8666969477470.

The previous prime is 8666969477399. The next prime is 8666969477519. The reversal of 8666969477471 is 1747749696668.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 8666969477471 - 2³⁰ = 8665895735647 is a prime.

It is a super-3 number, since 3×8666969477471³ (a number of 40 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8666969477071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4333484738735 + 4333484738736.

It is an arithmetic number, because the mean of its divisors is an integer number (4333484738736).

Almost surely, 2^{8666969477471} is an apocalyptic number.

8666969477471 is a deficient number, since it is larger than the sum of its proper divisors (1).

8666969477471 is an equidigital number, since it uses as much as digits as its factorization.

8666969477471 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4608866304, while the sum is 80.

The spelling of 8666969477471 in words is "eight trillion, six hundred sixty-six billion, nine hundred sixty-nine million, four hundred seventy-seven thousand, four hundred seventy-one".