16271647243 has 4 divisors (see below), whose sum is σ = 16650057688. Its totient is φ = 15893236800.

The previous prime is 16271647193. The next prime is 16271647261. The reversal of 16271647243 is 34274617261.

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 16271647243 - 2¹⁷ = 16271516171 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (43), and also a Moran number because the ratio is a prime number: 378410401 = 16271647243 / (1 + 6 + 2 + 7 + 1 + 6 + 4 + 7 + 2 + 4 + 3).

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 16271647243.

It is not an unprimeable number, because it can be changed into a prime (16271644243) 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, 189205158 + ... + 189205243.

It is an arithmetic number, because the mean of its divisors is an integer number (4162514422).

Almost surely, 2^16271647243 is an apocalyptic number.

16271647243 is a deficient number, since it is larger than the sum of its proper divisors (378410445).

16271647243 is an equidigital number, since it uses as much as digits as its factorization.

16271647243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 378410444.

The product of its digits is 338688, while the sum is 43.

The spelling of 16271647243 in words is "sixteen billion, two hundred seventy-one million, six hundred forty-seven thousand, two hundred forty-three".