5566561044553 has 4 divisors (see below), whose sum is σ = 5576044113360. Its totient is φ = 5557077975748.

The previous prime is 5566561044547. The next prime is 5566561044557. The reversal of 5566561044553 is 3554401656655.

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 5566561044553 - 2²¹ = 5566558947401 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 5566561044494 and 5566561044503.

It is not an unprimeable number, because it can be changed into a prime (5566561044557) 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, 4741533523 + ... + 4741534696.

It is an arithmetic number, because the mean of its divisors is an integer number (1394011028340).

Almost surely, 2^{5566561044553} is an apocalyptic number.

It is an amenable number.

5566561044553 is a deficient number, since it is larger than the sum of its proper divisors (9483068807).

5566561044553 is an equidigital number, since it uses as much as digits as its factorization.

5566561044553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9483068806.

The product of its (nonzero) digits is 32400000, while the sum is 55.

The spelling of 5566561044553 in words is "five trillion, five hundred sixty-six billion, five hundred sixty-one million, forty-four thousand, five hundred fifty-three".