5561061055101 has 8 divisors (see below), whose sum is σ = 8238608970560. Its totient is φ = 3707374036716.

The previous prime is 5561061055093. The next prime is 5561061055153. The reversal of 5561061055101 is 1015501601655.

It is a happy number.

It is not a de Polignac number, because 5561061055101 - 2³ = 5561061055093 is a prime.

It is a super-2 number, since 2×5561061055101² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5561061055171) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 102982612105 + ... + 102982612158.

It is an arithmetic number, because the mean of its divisors is an integer number (1029826121320).

Almost surely, 2^{5561061055101} is an apocalyptic number.

It is an amenable number.

5561061055101 is a deficient number, since it is larger than the sum of its proper divisors (2677547915459).

5561061055101 is a wasteful number, since it uses less digits than its factorization.

5561061055101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 205965224272 (or 205965224266 counting only the distinct ones).

The product of its (nonzero) digits is 22500, while the sum is 36.

Adding to 5561061055101 its reverse (1015501601655), we get a palindrome (6576562656756).

The spelling of 5561061055101 in words is "five trillion, five hundred sixty-one billion, sixty-one million, fifty-five thousand, one hundred one".