5555050005561 has 32 divisors (see below), whose sum is σ = 8476107494400. Its totient is φ = 3170089223616.

The previous prime is 5555050005503. The next prime is 5555050005581. The reversal of 5555050005561 is 1655000505555.

It is not a de Polignac number, because 5555050005561 - 2²³ = 5555041616953 is a prime.

It is a super-2 number, since 2×5555050005561² (a number of 26 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (5555050005581) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 203475490 + ... + 203502788.

It is an arithmetic number, because the mean of its divisors is an integer number (264878359200).

Almost surely, 2^{5555050005561} is an apocalyptic number.

It is an amenable number.

5555050005561 is a deficient number, since it is larger than the sum of its proper divisors (2921057488839).

5555050005561 is a wasteful number, since it uses less digits than its factorization.

5555050005561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39853.

The product of its (nonzero) digits is 468750, while the sum is 42.

The spelling of 5555050005561 in words is "five trillion, five hundred fifty-five billion, fifty million, five thousand, five hundred sixty-one".