1666685008335 has 16 divisors (see below), whose sum is σ = 2691618408576. Its totient is φ = 880591206048.

The previous prime is 1666685008309. The next prime is 1666685008367. The reversal of 1666685008335 is 5338005866661.

It is not a de Polignac number, because 1666685008335 - 2⁷ = 1666685008207 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 519214909 + ... + 519218118.

It is an arithmetic number, because the mean of its divisors is an integer number (168226150536).

Almost surely, 2^{1666685008335} is an apocalyptic number.

1666685008335 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1666685008335 is a deficient number, since it is larger than the sum of its proper divisors (1024933400241).

1666685008335 is a wasteful number, since it uses less digits than its factorization.

1666685008335 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1038433142.

The product of its (nonzero) digits is 18662400, while the sum is 57.

The spelling of 1666685008335 in words is "one trillion, six hundred sixty-six billion, six hundred eighty-five million, eight thousand, three hundred thirty-five".