1668335001685 has 8 divisors (see below), whose sum is σ = 2184002184096. Its totient is φ = 1213334546640.

The previous prime is 1668335001667. The next prime is 1668335001691. The reversal of 1668335001685 is 5861005338661.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1668335001685 - 2⁵ = 1668335001653 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15166681779 + ... + 15166681888.

It is an arithmetic number, because the mean of its divisors is an integer number (273000273012).

Almost surely, 2^{1668335001685} is an apocalyptic number.

It is an amenable number.

1668335001685 is a deficient number, since it is larger than the sum of its proper divisors (515667182411).

1668335001685 is a wasteful number, since it uses less digits than its factorization.

1668335001685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30333363683.

The product of its (nonzero) digits is 3110400, while the sum is 52.

The spelling of 1668335001685 in words is "one trillion, six hundred sixty-eight billion, three hundred thirty-five million, one thousand, six hundred eighty-five".