11666606066567 has 2 divisors, whose sum is σ = 11666606066568. Its totient is φ = 11666606066566.

The previous prime is 11666606066519. The next prime is 11666606066597. The reversal of 11666606066567 is 76566060666611.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11666606066567 - 2¹⁶ = 11666606001031 is a prime.

It is a super-2 number, since 2×11666606066567² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11666606066597) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5833303033283 + 5833303033284.

It is an arithmetic number, because the mean of its divisors is an integer number (5833303033284).

Almost surely, 2^{11666606066567} is an apocalyptic number.

11666606066567 is a deficient number, since it is larger than the sum of its proper divisors (1).

11666606066567 is an equidigital number, since it uses as much as digits as its factorization.

11666606066567 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 58786560, while the sum is 62.

The spelling of 11666606066567 in words is "eleven trillion, six hundred sixty-six billion, six hundred six million, sixty-six thousand, five hundred sixty-seven".