5561667843 has 4 divisors (see below), whose sum is σ = 7415557128. Its totient is φ = 3707778560.

The previous prime is 5561667841. The next prime is 5561667847. The reversal of 5561667843 is 3487661655.

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 5561667843 - 2¹ = 5561667841 is a prime.

It is not an unprimeable number, because it can be changed into a prime (5561667841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 926944638 + ... + 926944643.

It is an arithmetic number, because the mean of its divisors is an integer number (1853889282).

Almost surely, 2^5561667843 is an apocalyptic number.

5561667843 is a deficient number, since it is larger than the sum of its proper divisors (1853889285).

5561667843 is a wasteful number, since it uses less digits than its factorization.

5561667843 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1853889284.

The product of its digits is 3628800, while the sum is 51.

The square root of 5561667843 is about 74576.5904490142. The cubic root of 5561667843 is about 1771.7469047069.

The spelling of 5561667843 in words is "five billion, five hundred sixty-one million, six hundred sixty-seven thousand, eight hundred forty-three".