55505550000055 has 16 divisors (see below), whose sum is σ = 72373959936000. Its totient is φ = 40710352459680.

The previous prime is 55505550000049. The next prime is 55505550000077. The reversal of 55505550000055 is 55000005550555.

It is not a de Polignac number, because 55505550000055 - 2⁵ = 55505550000023 is a prime.

It is a super-2 number, since 2×55505550000055² (a number of 28 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 55505549999972 and 55505550000017.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9423689755 + ... + 9423695644.

It is an arithmetic number, because the mean of its divisors is an integer number (4523372496000).

Almost surely, 2^{55505550000055} is an apocalyptic number.

55505550000055 is a deficient number, since it is larger than the sum of its proper divisors (16868409935945).

55505550000055 is a wasteful number, since it uses less digits than its factorization.

55505550000055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18847385454.

The product of its (nonzero) digits is 390625, while the sum is 40.

The spelling of 55505550000055 in words is "fifty-five trillion, five hundred five billion, five hundred fifty million, fifty-five", and thus it is an aban number.