6666644174112 has 144 divisors (see below), whose sum is σ = 20418474618360. Its totient is φ = 2051086565376.

The previous prime is 6666644174111. The next prime is 6666644174123. The reversal of 6666644174112 is 2114714466666.

It can be written as a sum of positive squares in 4 ways, for example, as 3366623146896 + 3300021027216 = 1834836^2 + 1816596^2 .

It is a tau number, because it is divible by the number of its divisors (144).

It is not an unprimeable number, because it can be changed into a prime (6666644174111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 43792464 + ... + 43944432.

Almost surely, 2^{6666644174112} is an apocalyptic number.

It is an amenable number.

6666644174112 is an abundant number, since it is smaller than the sum of its proper divisors (13751830444248).

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

6666644174112 is a wasteful number, since it uses less digits than its factorization.

6666644174112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163715 (or 163704 counting only the distinct ones).

The product of its digits is 6967296, while the sum is 54.

The spelling of 6666644174112 in words is "six trillion, six hundred sixty-six billion, six hundred forty-four million, one hundred seventy-four thousand, one hundred twelve".