2128954655 has 32 divisors (see below), whose sum is σ = 2782676160. Its totient is φ = 1558103040.

The previous prime is 2128954637. The next prime is 2128954673. The reversal of 2128954655 is 5564598212.

It is an interprime number because it is at equal distance from previous prime (2128954637) and next prime (2128954673).

It is a de Polignac number, because none of the positive numbers 2^k-2128954655 is a prime.

It is a Smith number, since the sum of its digits (47) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent 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 31 ways as a sum of consecutive naturals, for example, 479345 + ... + 483765.

It is an arithmetic number, because the mean of its divisors is an integer number (86958630).

Almost surely, 2^2128954655 is an apocalyptic number.

2128954655 is a deficient number, since it is larger than the sum of its proper divisors (653721505).

2128954655 is a wasteful number, since it uses less digits than its factorization.

2128954655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4619.

The product of its digits is 864000, while the sum is 47.

The square root of 2128954655 is about 46140.5966042920. The cubic root of 2128954655 is about 1286.4378329907.

The spelling of 2128954655 in words is "two billion, one hundred twenty-eight million, nine hundred fifty-four thousand, six hundred fifty-five".