1666482885026 has 4 divisors (see below), whose sum is σ = 2499724327542. Its totient is φ = 833241442512.

The previous prime is 1666482885019. The next prime is 1666482885049. The reversal of 1666482885026 is 6205882846661.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1392010627225 + 274472257801 = 1179835^2 + 523901^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1666482885026.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 416620721255 + ... + 416620721258.

Almost surely, 2^{1666482885026} is an apocalyptic number.

1666482885026 is a deficient number, since it is larger than the sum of its proper divisors (833241442516).

1666482885026 is an equidigital number, since it uses as much as digits as its factorization.

1666482885026 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 833241442515.

The product of its (nonzero) digits is 53084160, while the sum is 62.

The spelling of 1666482885026 in words is "one trillion, six hundred sixty-six billion, four hundred eighty-two million, eight hundred eighty-five thousand, twenty-six".