2133687555 has 32 divisors (see below), whose sum is σ = 3992870400. Its totient is φ = 1078072416.

The previous prime is 2133687553. The next prime is 2133687571. The reversal of 2133687555 is 5557863312.

2133687555 is a `hidden beast` number, since 2 + 1 + 33 + 68 + 7 + 555 = 666.

It is not a de Polignac number, because 2133687555 - 2¹ = 2133687553 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 2133687555.

It is not an unprimeable number, because it can be changed into a prime (2133687551) 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 31 ways as a sum of consecutive naturals, for example, 413359 + ... + 418488.

It is an arithmetic number, because the mean of its divisors is an integer number (124777200).

Almost surely, 2^2133687555 is an apocalyptic number.

2133687555 is a deficient number, since it is larger than the sum of its proper divisors (1859182845).

2133687555 is a wasteful number, since it uses less digits than its factorization.

2133687555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 831880 (or 831874 counting only the distinct ones).

The product of its digits is 756000, while the sum is 45.

The square root of 2133687555 is about 46191.8559380331. The cubic root of 2133687555 is about 1287.3904249600.

The spelling of 2133687555 in words is "two billion, one hundred thirty-three million, six hundred eighty-seven thousand, five hundred fifty-five".