1166111106666 has 32 divisors (see below), whose sum is σ = 2545180602048. Its totient is φ = 353236698240.

The previous prime is 1166111106653. The next prime is 1166111106679. The reversal of 1166111106666 is 6666011116611.

It is an interprime number because it is at equal distance from previous prime (1166111106653) and next prime (1166111106679).

It is a super-2 number, since 2×1166111106666² (a number of 25 digits) contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 3077181 + ... + 3435296.

It is an arithmetic number, because the mean of its divisors is an integer number (79536893814).

Almost surely, 2^{1166111106666} is an apocalyptic number.

1166111106666 is an abundant number, since it is smaller than the sum of its proper divisors (1379069495382).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1166111106666 is a wasteful number, since it uses less digits than its factorization.

1166111106666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6515206.

The product of its (nonzero) digits is 46656, while the sum is 42.

The spelling of 1166111106666 in words is "one trillion, one hundred sixty-six billion, one hundred eleven million, one hundred six thousand, six hundred sixty-six".