5661873571 has 4 divisors (see below), whose sum is σ = 5665809600. Its totient is φ = 5657937544.

The previous prime is 5661873521. The next prime is 5661873577. The reversal of 5661873571 is 1753781665.

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 5661873571 - 2⁹ = 5661873059 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5661873577) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1965856 + ... + 1968733.

It is an arithmetic number, because the mean of its divisors is an integer number (1416452400).

Almost surely, 2^5661873571 is an apocalyptic number.

5661873571 is a deficient number, since it is larger than the sum of its proper divisors (3936029).

5661873571 is a wasteful number, since it uses less digits than its factorization.

5661873571 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3936028.

The product of its digits is 1058400, while the sum is 49.

The square root of 5661873571 is about 75245.4222594305. The cubic root of 5661873571 is about 1782.3242762252.

The spelling of 5661873571 in words is "five billion, six hundred sixty-one million, eight hundred seventy-three thousand, five hundred seventy-one".