155505055055 has 16 divisors (see below), whose sum is σ = 213449416704. Its totient is φ = 106539367200.

The previous prime is 155505055051. The next prime is 155505055063. The reversal of 155505055055 is 550550505551.

155505055055 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 155505055055 - 2² = 155505055051 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155505055051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1889777 + ... + 1970346.

It is an arithmetic number, because the mean of its divisors is an integer number (13340588544).

Almost surely, 2^155505055055 is an apocalyptic number.

155505055055 is a deficient number, since it is larger than the sum of its proper divisors (57944361649).

155505055055 is a wasteful number, since it uses less digits than its factorization.

155505055055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3861286.

The product of its (nonzero) digits is 390625, while the sum is 41.

The spelling of 155505055055 in words is "one hundred fifty-five billion, five hundred five million, fifty-five thousand, fifty-five".