10666616166605 has 16 divisors (see below), whose sum is σ = 14735279566080. Its totient is φ = 7260862388352.

The previous prime is 10666616166553. The next prime is 10666616166623. The reversal of 10666616166605 is 50666161666601.

It is a cyclic number.

It is not a de Polignac number, because 10666616166605 - 2⁶ = 10666616166541 is a prime.

It is a super-2 number, since 2×10666616166605² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 in 15 ways as a sum of consecutive naturals, for example, 1112259665 + ... + 1112269254.

It is an arithmetic number, because the mean of its divisors is an integer number (920954972880).

Almost surely, 2^{10666616166605} is an apocalyptic number.

It is an amenable number.

10666616166605 is a deficient number, since it is larger than the sum of its proper divisors (4068663399475).

10666616166605 is a wasteful number, since it uses less digits than its factorization.

10666616166605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2224529068.

The product of its (nonzero) digits is 8398080, while the sum is 56.

The spelling of 10666616166605 in words is "ten trillion, six hundred sixty-six billion, six hundred sixteen million, one hundred sixty-six thousand, six hundred five".