20804745117112 has 32 divisors (see below), whose sum is σ = 42560974537200. Its totient is φ = 9455410310400.

The previous prime is 20804745117077. The next prime is 20804745117137. The reversal of 20804745117112 is 21171154740802.

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, 15502287 + ... + 16790782.

Almost surely, 2^{20804745117112} is an apocalyptic number.

20804745117112 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

20804745117112 is an abundant number, since it is smaller than the sum of its proper divisors (21756229420088).

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

20804745117112 is a wasteful number, since it uses less digits than its factorization.

20804745117112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32300407 (or 32300403 counting only the distinct ones).

The product of its (nonzero) digits is 125440, while the sum is 43.

Adding to 20804745117112 its reverse (21171154740802), we get a palindrome (41975899857914).

The spelling of 20804745117112 in words is "twenty trillion, eight hundred four billion, seven hundred forty-five million, one hundred seventeen thousand, one hundred twelve".