1685000000001 has 8 divisors (see below), whose sum is σ = 2263065693984. Its totient is φ = 1115133819680.

The previous prime is 1684999999999. The next prime is 1685000000011. The reversal of 1685000000001 is 1000000005861.

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

It is a cyclic number.

It is not a de Polignac number, because 1685000000001 - 2¹ = 1684999999999 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1685000000011) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2049877935 + ... + 2049878756.

It is an arithmetic number, because the mean of its divisors is an integer number (282883211748).

Almost surely, 2^{1685000000001} is an apocalyptic number.

It is an amenable number.

1685000000001 is a deficient number, since it is larger than the sum of its proper divisors (578065693983).

1685000000001 is a wasteful number, since it uses less digits than its factorization.

1685000000001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4099756831.

The product of its (nonzero) digits is 240, while the sum is 21.

Adding to 1685000000001 its reverse (1000000005861), we get a palindrome (2685000005862).

The spelling of 1685000000001 in words is "one trillion, six hundred eighty-five billion, one", and thus it is an aban number.