16686382103 has 4 divisors (see below), whose sum is σ = 17564612760. Its totient is φ = 15808151448.

The previous prime is 16686382081. The next prime is 16686382109. The reversal of 16686382103 is 30128368661.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 30128368661 = 5651 ⋅5331511.

It is a cyclic number.

It is not a de Polignac number, because 16686382103 - 2¹⁸ = 16686119959 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 (16686382109) 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, 439115300 + ... + 439115337.

It is an arithmetic number, because the mean of its divisors is an integer number (4391153190).

Almost surely, 2^16686382103 is an apocalyptic number.

16686382103 is a deficient number, since it is larger than the sum of its proper divisors (878230657).

16686382103 is an equidigital number, since it uses as much as digits as its factorization.

16686382103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 878230656.

The product of its (nonzero) digits is 248832, while the sum is 44.

The spelling of 16686382103 in words is "sixteen billion, six hundred eighty-six million, three hundred eighty-two thousand, one hundred three".