2128818855 has 16 divisors (see below), whose sum is σ = 3410557920. Its totient is φ = 1133887488.

The previous prime is 2128818841. The next prime is 2128818859. The reversal of 2128818855 is 5588188212.

It is not a de Polignac number, because 2128818855 - 2⁹ = 2128818343 is a prime.

It is a super-2 number, since 2×2128818855² = 9063739434807022050, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2128818859) 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, 80742 + ... + 103811.

It is an arithmetic number, because the mean of its divisors is an integer number (213159870).

Almost surely, 2^2128818855 is an apocalyptic number.

2128818855 is a deficient number, since it is larger than the sum of its proper divisors (1281739065).

2128818855 is a wasteful number, since it uses less digits than its factorization.

2128818855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 185330.

The product of its digits is 409600, while the sum is 48.

The square root of 2128818855 is about 46139.1249917031. The cubic root of 2128818855 is about 1286.4104796647.

The spelling of 2128818855 in words is "two billion, one hundred twenty-eight million, eight hundred eighteen thousand, eight hundred fifty-five".