5561550016409 has 4 divisors (see below), whose sum is σ = 5740954855680. Its totient is φ = 5382145177140.

The previous prime is 5561550016331. The next prime is 5561550016433. The reversal of 5561550016409 is 9046100551655.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 5561550016409 - 2⁸ = 5561550016153 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (5561550016109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 89702419589 + ... + 89702419650.

It is an arithmetic number, because the mean of its divisors is an integer number (1435238713920).

Almost surely, 2^{5561550016409} is an apocalyptic number.

It is an amenable number.

5561550016409 is a deficient number, since it is larger than the sum of its proper divisors (179404839271).

5561550016409 is a wasteful number, since it uses less digits than its factorization.

5561550016409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 179404839270.

The product of its (nonzero) digits is 810000, while the sum is 47.

The spelling of 5561550016409 in words is "five trillion, five hundred sixty-one billion, five hundred fifty million, sixteen thousand, four hundred nine".