55505556105505 has 16 divisors (see below), whose sum is σ = 75005748546048. Its totient is φ = 39065494032000.

The previous prime is 55505556105491. The next prime is 55505556105511. The reversal of 55505556105505 is 50550165550555.

It is a happy number.

55505556105505 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 55505556105505 - 2⁹ = 55505556104993 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16277287476 + ... + 16277290885.

It is an arithmetic number, because the mean of its divisors is an integer number (4687859284128).

Almost surely, 2^{55505556105505} is an apocalyptic number.

55505556105505 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

55505556105505 is a deficient number, since it is larger than the sum of its proper divisors (19500192440543).

55505556105505 is a wasteful number, since it uses less digits than its factorization.

55505556105505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32554578408.

The product of its (nonzero) digits is 11718750, while the sum is 52.

The spelling of 55505556105505 in words is "fifty-five trillion, five hundred five billion, five hundred fifty-six million, one hundred five thousand, five hundred five".