5661108673 has 4 divisors (see below), whose sum is σ = 6175754928. Its totient is φ = 5146462420.

The previous prime is 5661108667. The next prime is 5661108683. The reversal of 5661108673 is 3768011665.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 5661108673 - 2⁹ = 5661108161 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5661108623) 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, 257323111 + ... + 257323132.

It is an arithmetic number, because the mean of its divisors is an integer number (1543938732).

Almost surely, 2^5661108673 is an apocalyptic number.

It is an amenable number.

5661108673 is a deficient number, since it is larger than the sum of its proper divisors (514646255).

5661108673 is a wasteful number, since it uses less digits than its factorization.

5661108673 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 514646254.

The product of its (nonzero) digits is 181440, while the sum is 43.

The square root of 5661108673 is about 75240.3393998193. The cubic root of 5661108673 is about 1782.2440108234.

The spelling of 5661108673 in words is "five billion, six hundred sixty-one million, one hundred eight thousand, six hundred seventy-three".