16703683687 has 4 divisors (see below), whose sum is σ = 16713022360. Its totient is φ = 16694345016.

The previous prime is 16703683673. The next prime is 16703683739. The reversal of 16703683687 is 78638630761.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 78638630761 = 587 ⋅133967003.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16703683687 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 (16703683657) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4666653 + ... + 4670230.

It is an arithmetic number, because the mean of its divisors is an integer number (4178255590).

Almost surely, 2^16703683687 is an apocalyptic number.

16703683687 is a deficient number, since it is larger than the sum of its proper divisors (9338673).

16703683687 is an equidigital number, since it uses as much as digits as its factorization.

16703683687 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9338672.

The product of its (nonzero) digits is 6096384, while the sum is 55.

The spelling of 16703683687 in words is "sixteen billion, seven hundred three million, six hundred eighty-three thousand, six hundred eighty-seven".