215455544155 has 16 divisors (see below), whose sum is σ = 265564214784. Its totient is φ = 167687107200.

The previous prime is 215455544149. The next prime is 215455544189. The reversal of 215455544155 is 551445554512.

215455544155 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 215455544155 - 2³ = 215455544147 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 (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1717830 + ... + 1838980.

It is an arithmetic number, because the mean of its divisors is an integer number (16597763424).

Almost surely, 2^215455544155 is an apocalyptic number.

215455544155 is a deficient number, since it is larger than the sum of its proper divisors (50108670629).

215455544155 is a wasteful number, since it uses less digits than its factorization.

215455544155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130806.

The product of its digits is 2000000, while the sum is 46.

The spelling of 215455544155 in words is "two hundred fifteen billion, four hundred fifty-five million, five hundred forty-four thousand, one hundred fifty-five".