8543673644 has 48 divisors (see below), whose sum is σ = 17284730400. Its totient is φ = 3658099200.

The previous prime is 8543673581. The next prime is 8543673647. The reversal of 8543673644 is 4463763458.

It is a junction number, because it is equal to n+sod(n) for n = 8543673592 and 8543673601.

It is not an unprimeable number, because it can be changed into a prime (8543673647) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29339 + ... + 133970.

It is an arithmetic number, because the mean of its divisors is an integer number (360098550).

Almost surely, 2^8543673644 is an apocalyptic number.

It is an amenable number.

8543673644 is an abundant number, since it is smaller than the sum of its proper divisors (8741056756).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8543673644 is a wasteful number, since it uses less digits than its factorization.

8543673644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163394 (or 163392 counting only the distinct ones).

The product of its digits is 5806080, while the sum is 50.

The square root of 8543673644 is about 92431.9946988055. The cubic root of 8543673644 is about 2044.3168904610.

The spelling of 8543673644 in words is "eight billion, five hundred forty-three million, six hundred seventy-three thousand, six hundred forty-four".