5561117789 has 4 divisors (see below), whose sum is σ = 5562577020. Its totient is φ = 5559658560.

The previous prime is 5561117743. The next prime is 5561117791. The reversal of 5561117789 is 9877111655.

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

It can be written as a sum of positive squares in 2 ways, for example, as 2216808889 + 3344308900 = 47083^2 + 57830^2 .

It is a cyclic number.

It is not a de Polignac number, because 5561117789 - 2¹⁶ = 5561052253 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 (5561117729) 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, 723884 + ... + 731525.

It is an arithmetic number, because the mean of its divisors is an integer number (1390644255).

Almost surely, 2^5561117789 is an apocalyptic number.

It is an amenable number.

5561117789 is a deficient number, since it is larger than the sum of its proper divisors (1459231).

5561117789 is a wasteful number, since it uses less digits than its factorization.

5561117789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1459230.

The product of its digits is 529200, while the sum is 50.

The square root of 5561117789 is about 74572.9025115692. The cubic root of 5561117789 is about 1771.6884936554.

The spelling of 5561117789 in words is "five billion, five hundred sixty-one million, one hundred seventeen thousand, seven hundred eighty-nine".