16864523871 has 8 divisors (see below), whose sum is σ = 24215726640. Its totient is φ = 10378168512.

The previous prime is 16864523867. The next prime is 16864523917. The reversal of 16864523871 is 17832546861.

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

It is not a de Polignac number, because 16864523871 - 2² = 16864523867 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16864524871) 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, 216211806 + ... + 216211883.

It is an arithmetic number, because the mean of its divisors is an integer number (3026965830).

Almost surely, 2^16864523871 is an apocalyptic number.

16864523871 is a deficient number, since it is larger than the sum of its proper divisors (7351202769).

16864523871 is a wasteful number, since it uses less digits than its factorization.

16864523871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 432423705.

The product of its digits is 1935360, while the sum is 51.

The spelling of 16864523871 in words is "sixteen billion, eight hundred sixty-four million, five hundred twenty-three thousand, eight hundred seventy-one".