1666660285162 has 16 divisors (see below), whose sum is σ = 2529032404680. Its totient is φ = 823656537088.

The previous prime is 1666660285153. The next prime is 1666660285237. The reversal of 1666660285162 is 2615820666661.

It can be written as a sum of positive squares in 4 ways, for example, as 1546812076681 + 119848208481 = 1243709^2 + 346191^2 .

It is a super-2 number, since 2×1666660285162² (a number of 25 digits) contains 22 as substring.

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 7 ways as a sum of consecutive naturals, for example, 1289053 + ... + 2234944.

Almost surely, 2^{1666660285162} is an apocalyptic number.

1666660285162 is a deficient number, since it is larger than the sum of its proper divisors (862372119518).

1666660285162 is a wasteful number, since it uses less digits than its factorization.

1666660285162 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3526745.

The product of its (nonzero) digits is 7464960, while the sum is 55.

The spelling of 1666660285162 in words is "one trillion, six hundred sixty-six billion, six hundred sixty million, two hundred eighty-five thousand, one hundred sixty-two".