20555354212204 has 12 divisors (see below), whose sum is σ = 41110708424464. Its totient is φ = 8809437519504.

The previous prime is 20555354212189. The next prime is 20555354212223. The reversal of 20555354212204 is 40221245355502.

20555354212204 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 367059896619 + ... + 367059896674.

Almost surely, 2^{20555354212204} is an apocalyptic number.

It is an amenable number.

20555354212204 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

20555354212204 is a wasteful number, since it uses less digits than its factorization.

20555354212204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 734119793304 (or 734119793302 counting only the distinct ones).

The product of its (nonzero) digits is 480000, while the sum is 40.

Adding to 20555354212204 its reverse (40221245355502), we get a palindrome (60776599567706).

The spelling of 20555354212204 in words is "twenty trillion, five hundred fifty-five billion, three hundred fifty-four million, two hundred twelve thousand, two hundred four".