8243445071 has 4 divisors (see below), whose sum is σ = 8261249952. Its totient is φ = 8225640192.

The previous prime is 8243445037. The next prime is 8243445107. The reversal of 8243445071 is 1705443428.

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-8243445071 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 (8243448071) 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, 8901746 + ... + 8902671.

It is an arithmetic number, because the mean of its divisors is an integer number (2065312488).

Almost surely, 2^8243445071 is an apocalyptic number.

8243445071 is a deficient number, since it is larger than the sum of its proper divisors (17804881).

8243445071 is a wasteful number, since it uses less digits than its factorization.

8243445071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17804880.

The product of its (nonzero) digits is 107520, while the sum is 38.

The square root of 8243445071 is about 90793.4197560594. The cubic root of 8243445071 is about 2020.0847161641.

Adding to 8243445071 its reverse (1705443428), we get a palindrome (9948888499).

The spelling of 8243445071 in words is "eight billion, two hundred forty-three million, four hundred forty-five thousand, seventy-one".