20854816112 has 20 divisors (see below), whose sum is σ = 43514376360. Its totient is φ = 9625299648.

The previous prime is 20854816109. The next prime is 20854816117. The reversal of 20854816112 is 21161845802.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20854816117) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50131562 + ... + 50131977.

It is an arithmetic number, because the mean of its divisors is an integer number (2175718818).

Almost surely, 2^20854816112 is an apocalyptic number.

It is an amenable number.

20854816112 is an abundant number, since it is smaller than the sum of its proper divisors (22659560248).

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

20854816112 is a wasteful number, since it uses less digits than its factorization.

20854816112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100263560 (or 100263554 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 38.

The spelling of 20854816112 in words is "twenty billion, eight hundred fifty-four million, eight hundred sixteen thousand, one hundred twelve".