32171216685 has 8 divisors (see below), whose sum is σ = 51473946720. Its totient is φ = 17157982224.

The previous prime is 32171216659. The next prime is 32171216711. The reversal of 32171216685 is 58661217123.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (32171216659) and next prime (32171216711).

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

It is not a de Polignac number, because 32171216685 - 2¹² = 32171212589 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1072373875 + ... + 1072373904.

It is an arithmetic number, because the mean of its divisors is an integer number (6434243340).

Almost surely, 2^32171216685 is an apocalyptic number.

It is an amenable number.

32171216685 is a deficient number, since it is larger than the sum of its proper divisors (19302730035).

32171216685 is a wasteful number, since it uses less digits than its factorization.

32171216685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2144747787.

The product of its digits is 120960, while the sum is 42.

The spelling of 32171216685 in words is "thirty-two billion, one hundred seventy-one million, two hundred sixteen thousand, six hundred eighty-five".