5105005055561 has 16 divisors (see below), whose sum is σ = 5476882003200. Its totient is φ = 4741151970048.

The previous prime is 5105005055551. The next prime is 5105005055573. The reversal of 5105005055561 is 1655505005015.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5105005055561 is a prime.

It is a super-2 number, since 2×5105005055561² (a number of 26 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (5105005055531) 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 15 ways as a sum of consecutive naturals, for example, 1230710 + ... + 3424128.

It is an arithmetic number, because the mean of its divisors is an integer number (342305125200).

Almost surely, 2^{5105005055561} is an apocalyptic number.

It is an amenable number.

5105005055561 is a deficient number, since it is larger than the sum of its proper divisors (371876947639).

5105005055561 is a wasteful number, since it uses less digits than its factorization.

5105005055561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2195248.

The product of its (nonzero) digits is 93750, while the sum is 38.

The spelling of 5105005055561 in words is "five trillion, one hundred five billion, five million, fifty-five thousand, five hundred sixty-one".