8651543223 has 4 divisors (see below), whose sum is σ = 11535390968. Its totient is φ = 5767695480.

The previous prime is 8651543221. The next prime is 8651543297. The reversal of 8651543223 is 3223451568.

It is a happy number.

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

It is not a de Polignac number, because 8651543223 - 2¹ = 8651543221 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 (8651543221) 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, 1441923868 + ... + 1441923873.

It is an arithmetic number, because the mean of its divisors is an integer number (2883847742).

Almost surely, 2^8651543223 is an apocalyptic number.

8651543223 is a deficient number, since it is larger than the sum of its proper divisors (2883847745).

8651543223 is a wasteful number, since it uses less digits than its factorization.

8651543223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2883847744.

The product of its digits is 172800, while the sum is 39.

The square root of 8651543223 is about 93013.6722369351. The cubic root of 8651543223 is about 2052.8845549836.

The spelling of 8651543223 in words is "eight billion, six hundred fifty-one million, five hundred forty-three thousand, two hundred twenty-three".