1686870033671 has 16 divisors (see below), whose sum is σ = 1769608581120. Its totient is φ = 1604916250080.

The previous prime is 1686870033659. The next prime is 1686870033677. The reversal of 1686870033671 is 1763300786861.

It is not a de Polignac number, because 1686870033671 - 2³⁰ = 1685796291847 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1686870033677) 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, 85578965 + ... + 85598673.

It is an arithmetic number, because the mean of its divisors is an integer number (110600536320).

Almost surely, 2^{1686870033671} is an apocalyptic number.

1686870033671 is a deficient number, since it is larger than the sum of its proper divisors (82738547449).

1686870033671 is a wasteful number, since it uses less digits than its factorization.

1686870033671 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39406.

The product of its (nonzero) digits is 6096384, while the sum is 56.

The spelling of 1686870033671 in words is "one trillion, six hundred eighty-six billion, eight hundred seventy million, thirty-three thousand, six hundred seventy-one".