16503327671 has 4 divisors (see below), whose sum is σ = 16949363592. Its totient is φ = 16057291752.

The previous prime is 16503327647. The next prime is 16503327691. The reversal of 16503327671 is 17672330561.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16503327671 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 (16503327601) 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, 223017905 + ... + 223017978.

It is an arithmetic number, because the mean of its divisors is an integer number (4237340898).

Almost surely, 2^16503327671 is an apocalyptic number.

16503327671 is a deficient number, since it is larger than the sum of its proper divisors (446035921).

16503327671 is an equidigital number, since it uses as much as digits as its factorization.

16503327671 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 446035920.

The product of its (nonzero) digits is 158760, while the sum is 41.

The spelling of 16503327671 in words is "sixteen billion, five hundred three million, three hundred twenty-seven thousand, six hundred seventy-one".