1666668683337 has 16 divisors (see below), whose sum is σ = 2540957427072. Its totient is φ = 951905174400.

The previous prime is 1666668683227. The next prime is 1666668683347. The reversal of 1666668683337 is 7333868666661.

It is not a de Polignac number, because 1666668683337 - 2⁸ = 1666668683081 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1666668683347) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19829164 + ... + 19913037.

It is an arithmetic number, because the mean of its divisors is an integer number (158809839192).

Almost surely, 2^{1666668683337} is an apocalyptic number.

It is an amenable number.

1666668683337 is a deficient number, since it is larger than the sum of its proper divisors (874288743735).

1666668683337 is a wasteful number, since it uses less digits than its factorization.

1666668683337 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39744208.

The product of its digits is 564350976, while the sum is 69.

The spelling of 1666668683337 in words is "one trillion, six hundred sixty-six billion, six hundred sixty-eight million, six hundred eighty-three thousand, three hundred thirty-seven".