1166662666611 has 128 divisors (see below), whose sum is σ = 1994548147200. Its totient is φ = 667612108800.

The previous prime is 1166662666583. The next prime is 1166662666723.

1166662666611 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 1166662666611 - 2⁷ = 1166662666483 is a prime.

It is a super-2 number, since 2×1166662666611² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1166662666511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 329657080 + ... + 329660618.

It is an arithmetic number, because the mean of its divisors is an integer number (15582407400).

Almost surely, 2^{1166662666611} is an apocalyptic number.

1166662666611 is a deficient number, since it is larger than the sum of its proper divisors (827885480589).

1166662666611 is a wasteful number, since it uses less digits than its factorization.

1166662666611 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4226 (or 4220 counting only the distinct ones).

The product of its digits is 3359232, while the sum is 54.

The spelling of 1166662666611 in words is "one trillion, one hundred sixty-six billion, six hundred sixty-two million, six hundred sixty-six thousand, six hundred eleven".