5561727800639 has 2 divisors, whose sum is σ = 5561727800640. Its totient is φ = 5561727800638.

The previous prime is 5561727800609. The next prime is 5561727800663. The reversal of 5561727800639 is 9360087271655.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 5561727800639 - 2²⁴ = 5561711023423 is a prime.

It is a super-2 number, since 2×5561727800639² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5561727800609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2780863900319 + 2780863900320.

It is an arithmetic number, because the mean of its divisors is an integer number (2780863900320).

Almost surely, 2^{5561727800639} is an apocalyptic number.

5561727800639 is a deficient number, since it is larger than the sum of its proper divisors (1).

5561727800639 is an equidigital number, since it uses as much as digits as its factorization.

5561727800639 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 19051200, while the sum is 59.

The spelling of 5561727800639 in words is "five trillion, five hundred sixty-one billion, seven hundred twenty-seven million, eight hundred thousand, six hundred thirty-nine".