2055422521728 has 144 divisors (see below), whose sum is σ = 6141871036860. Its totient is φ = 685140560640.

The previous prime is 2055422521697. The next prime is 2055422521751. The reversal of 2055422521728 is 8271252245502.

2055422521728 is a `hidden beast` number, since 2 + 0 + 5 + 5 + 422 + 5 + 217 + 2 + 8 = 666.

It is a tau number, because it is divible by the number of its divisors (144).

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 17 ways as a sum of consecutive naturals, for example, 383938 + ... + 2063553.

Almost surely, 2^{2055422521728} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2055422521728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3070935518430).

2055422521728 is an abundant number, since it is smaller than the sum of its proper divisors (4086448515132).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2055422521728 is an frugal number, since it uses more digits than its factorization.

2055422521728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2447529 (or 2447496 counting only the distinct ones).

The product of its (nonzero) digits is 896000, while the sum is 45.

The spelling of 2055422521728 in words is "two trillion, fifty-five billion, four hundred twenty-two million, five hundred twenty-one thousand, seven hundred twenty-eight".