5561066106555 has 32 divisors (see below), whose sum is σ = 9037954101504. Its totient is φ = 2919225488256.

The previous prime is 5561066106529. The next prime is 5561066106559. The reversal of 5561066106555 is 5556016601655.

It is not a de Polignac number, because 5561066106555 - 2¹⁴ = 5561066090171 is a prime.

It is a super-2 number, since 2×5561066106555² (a number of 26 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 5561066106498 and 5561066106507.

It is not an unprimeable number, because it can be changed into a prime (5561066106559) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1061809 + ... + 3499938.

It is an arithmetic number, because the mean of its divisors is an integer number (282436065672).

Almost surely, 2^{5561066106555} is an apocalyptic number.

5561066106555 is a deficient number, since it is larger than the sum of its proper divisors (3476887994949).

5561066106555 is a wasteful number, since it uses less digits than its factorization.

5561066106555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4563035.

The product of its (nonzero) digits is 4050000, while the sum is 51.

The spelling of 5561066106555 in words is "five trillion, five hundred sixty-one billion, sixty-six million, one hundred six thousand, five hundred fifty-five".