55500550505555 has 32 divisors (see below), whose sum is σ = 70890630530688. Its totient is φ = 41622947942400.

The previous prime is 55500550505549. The next prime is 55500550505557. The reversal of 55500550505555 is 55550505500555.

It is not a de Polignac number, because 55500550505555 - 2¹⁴ = 55500550489171 is a prime.

It is a super-2 number, since 2×55500550505555² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55500550505557) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12337886 + ... + 16224195.

It is an arithmetic number, because the mean of its divisors is an integer number (2215332204084).

Almost surely, 2^{55500550505555} is an apocalyptic number.

55500550505555 is a deficient number, since it is larger than the sum of its proper divisors (15390080025133).

55500550505555 is a wasteful number, since it uses less digits than its factorization.

55500550505555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28562447.

The product of its (nonzero) digits is 9765625, while the sum is 50.

The spelling of 55500550505555 in words is "fifty-five trillion, five hundred billion, five hundred fifty million, five hundred five thousand, five hundred fifty-five".