561727783339 has 4 divisors (see below), whose sum is σ = 564865927560. Its totient is φ = 558589639120.

The previous prime is 561727783291. The next prime is 561727783343. The reversal of 561727783339 is 933387727165.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 933387727165 = 5 ⋅186677545433.

It is a cyclic number.

It is not a de Polignac number, because 561727783339 - 2²⁹ = 561190912427 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (561727783349) 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, 1569071842 + ... + 1569072199.

It is an arithmetic number, because the mean of its divisors is an integer number (141216481890).

Almost surely, 2^561727783339 is an apocalyptic number.

561727783339 is a deficient number, since it is larger than the sum of its proper divisors (3138144221).

561727783339 is a wasteful number, since it uses less digits than its factorization.

561727783339 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3138144220.

The product of its digits is 40007520, while the sum is 61.

The spelling of 561727783339 in words is "five hundred sixty-one billion, seven hundred twenty-seven million, seven hundred eighty-three thousand, three hundred thirty-nine".