20210555055 has 64 divisors (see below), whose sum is σ = 34306467840. Its totient is φ = 10138867200.

The previous prime is 20210555033. The next prime is 20210555081. The reversal of 20210555055 is 55055501202.

It is not a de Polignac number, because 20210555055 - 2⁸ = 20210554799 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 12467145 + ... + 12468765.

It is an arithmetic number, because the mean of its divisors is an integer number (536038560).

Almost surely, 2^20210555055 is an apocalyptic number.

20210555055 is a deficient number, since it is larger than the sum of its proper divisors (14095912785).

20210555055 is a wasteful number, since it uses less digits than its factorization.

20210555055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2232.

The product of its (nonzero) digits is 12500, while the sum is 30.

The spelling of 20210555055 in words is "twenty billion, two hundred ten million, five hundred fifty-five thousand, fifty-five".