20550435430055 has 8 divisors (see below), whose sum is σ = 24661073599344. Its totient is φ = 16439980955200.

The previous prime is 20550435430037. The next prime is 20550435430121. The reversal of 20550435430055 is 55003453405502.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20550435430055 - 2²⁶ = 20550368321191 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20550435429994 and 20550435430021.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45677366 + ... + 46125075.

It is an arithmetic number, because the mean of its divisors is an integer number (3082634199918).

Almost surely, 2^{20550435430055} is an apocalyptic number.

20550435430055 is a deficient number, since it is larger than the sum of its proper divisors (4110638169289).

20550435430055 is an equidigital number, since it uses as much as digits as its factorization.

20550435430055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91847217.

The product of its (nonzero) digits is 900000, while the sum is 41.

Adding to 20550435430055 its reverse (55003453405502), we get a palindrome (75553888835557).

The spelling of 20550435430055 in words is "twenty trillion, five hundred fifty billion, four hundred thirty-five million, four hundred thirty thousand, fifty-five".