16871560891 has 8 divisors (see below), whose sum is σ = 17762201600. Its totient is φ = 15981186600.

The previous prime is 16871560889. The next prime is 16871560897. The reversal of 16871560891 is 19806517861.

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 16871560891 - 2¹ = 16871560889 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16871560897) 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, 70666 + ... + 196816.

It is an arithmetic number, because the mean of its divisors is an integer number (2220275200).

Almost surely, 2^16871560891 is an apocalyptic number.

16871560891 is a deficient number, since it is larger than the sum of its proper divisors (890640709).

16871560891 is a wasteful number, since it uses less digits than its factorization.

16871560891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133209.

The product of its (nonzero) digits is 725760, while the sum is 52.

The spelling of 16871560891 in words is "sixteen billion, eight hundred seventy-one million, five hundred sixty thousand, eight hundred ninety-one".