16684351671 has 8 divisors (see below), whose sum is σ = 23957017840. Its totient is φ = 10267293312.

The previous prime is 16684351661. The next prime is 16684351681. The reversal of 16684351671 is 17615348661.

It is an interprime number because it is at equal distance from previous prime (16684351661) and next prime (16684351681).

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

It is not a de Polignac number, because 16684351671 - 2¹¹ = 16684349623 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 16684351671.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16684351631) 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, 213901906 + ... + 213901983.

It is an arithmetic number, because the mean of its divisors is an integer number (2994627230).

Almost surely, 2^16684351671 is an apocalyptic number.

16684351671 is a deficient number, since it is larger than the sum of its proper divisors (7272666169).

16684351671 is a wasteful number, since it uses less digits than its factorization.

16684351671 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 427803905.

The product of its digits is 725760, while the sum is 48.

The spelling of 16684351671 in words is "sixteen billion, six hundred eighty-four million, three hundred fifty-one thousand, six hundred seventy-one".