1666666683335 has 16 divisors (see below), whose sum is σ = 2037846833280. Its totient is φ = 1308104878080.

The previous prime is 1666666683329. The next prime is 1666666683377. The reversal of 1666666683335 is 5333866666661.

It is not a de Polignac number, because 1666666683335 - 2⁴⁰ = 567155055559 is a prime.

It is a congruent 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, 4998311 + ... + 5321319.

It is an arithmetic number, because the mean of its divisors is an integer number (127365427080).

Almost surely, 2^{1666666683335} is an apocalyptic number.

1666666683335 is a deficient number, since it is larger than the sum of its proper divisors (371180149945).

1666666683335 is a wasteful number, since it uses less digits than its factorization.

1666666683335 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 342538.

The product of its digits is 302330880, while the sum is 65.

The spelling of 1666666683335 in words is "one trillion, six hundred sixty-six billion, six hundred sixty-six million, six hundred eighty-three thousand, three hundred thirty-five".