16131687187 has 8 divisors (see below), whose sum is σ = 20112233472. Its totient is φ = 12570145800.

The previous prime is 16131687181. The next prime is 16131687199. The reversal of 16131687187 is 78178613161.

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 16131687187 - 2³ = 16131687179 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 16131687187.

It is not an unprimeable number, because it can be changed into a prime (16131687181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 104751139 + ... + 104751292.

It is an arithmetic number, because the mean of its divisors is an integer number (2514029184).

Almost surely, 2^16131687187 is an apocalyptic number.

16131687187 is a deficient number, since it is larger than the sum of its proper divisors (3980546285).

16131687187 is a wasteful number, since it uses less digits than its factorization.

16131687187 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 209502449.

The product of its digits is 338688, while the sum is 49.

The spelling of 16131687187 in words is "sixteen billion, one hundred thirty-one million, six hundred eighty-seven thousand, one hundred eighty-seven".