20550434055120 has 120 divisors (see below), whose sum is σ = 69168917493000. Its totient is φ = 5467910504448.

The previous prime is 20550434055103. The next prime is 20550434055121. The reversal of 20550434055120 is 2155043405502.

20550434055120 is a `hidden beast` number, since 2 + 0 + 5 + 5 + 0 + 43 + 40 + 551 + 20 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 424551283776 + 20125882771344 = 651576^2 + 4486188^2 .

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20550434055121) 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 23 ways as a sum of consecutive naturals, for example, 31460985 + ... + 32107544.

It is an arithmetic number, because the mean of its divisors is an integer number (576407645775).

Almost surely, 2^{20550434055120} is an apocalyptic number.

20550434055120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20550434055120 is an abundant number, since it is smaller than the sum of its proper divisors (48618483437880).

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

20550434055120 is a wasteful number, since it uses less digits than its factorization.

20550434055120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63568997 (or 63568988 counting only the distinct ones).

The product of its (nonzero) digits is 120000, while the sum is 36.

The spelling of 20550434055120 in words is "twenty trillion, five hundred fifty billion, four hundred thirty-four million, fifty-five thousand, one hundred twenty".