16687488707 has 4 divisors (see below), whose sum is σ = 16688088600. Its totient is φ = 16686888816.

The previous prime is 16687488703. The next prime is 16687488731. The reversal of 16687488707 is 70788478661.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 16687488707 - 2² = 16687488703 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 16687488707.

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 3 ways as a sum of consecutive naturals, for example, 256082 + ... + 314567.

It is an arithmetic number, because the mean of its divisors is an integer number (4172022150).

Almost surely, 2^16687488707 is an apocalyptic number.

16687488707 is a deficient number, since it is larger than the sum of its proper divisors (599893).

16687488707 is an equidigital number, since it uses as much as digits as its factorization.

16687488707 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 599892.

The product of its (nonzero) digits is 25288704, while the sum is 62.

The spelling of 16687488707 in words is "sixteen billion, six hundred eighty-seven million, four hundred eighty-eight thousand, seven hundred seven".