5561939054239 has 4 divisors (see below), whose sum is σ = 5579484603624. Its totient is φ = 5544393504856.

The previous prime is 5561939054183. The next prime is 5561939054261. The reversal of 5561939054239 is 9324509391655.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5561939054239 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 (5561939054279) 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, 8772774217 + ... + 8772774850.

It is an arithmetic number, because the mean of its divisors is an integer number (1394871150906).

Almost surely, 2^{5561939054239} is an apocalyptic number.

5561939054239 is a deficient number, since it is larger than the sum of its proper divisors (17545549385).

5561939054239 is a wasteful number, since it uses less digits than its factorization.

5561939054239 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17545549384.

The product of its (nonzero) digits is 39366000, while the sum is 61.

The spelling of 5561939054239 in words is "five trillion, five hundred sixty-one billion, nine hundred thirty-nine million, fifty-four thousand, two hundred thirty-nine".