16687488709 has 8 divisors (see below), whose sum is σ = 16797690368. Its totient is φ = 16577336880.

The previous prime is 16687488703. The next prime is 16687488731. The reversal of 16687488709 is 90788478661.

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 16687488709 - 2¹⁷ = 16687357637 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16687488703) 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, 858124 + ... + 877354.

It is an arithmetic number, because the mean of its divisors is an integer number (2099711296).

Almost surely, 2^16687488709 is an apocalyptic number.

It is an amenable number.

16687488709 is a deficient number, since it is larger than the sum of its proper divisors (110201659).

16687488709 is a wasteful number, since it uses less digits than its factorization.

16687488709 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24915.

The product of its (nonzero) digits is 32514048, while the sum is 64.

The spelling of 16687488709 in words is "sixteen billion, six hundred eighty-seven million, four hundred eighty-eight thousand, seven hundred nine".