20854625454312 has 192 divisors, whose sum is σ = 57256588609920. Its totient is φ = 6292236294144.

The previous prime is 20854625454217. The next prime is 20854625454329. The reversal of 20854625454312 is 21345452645802.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 287601853 + ... + 287674355.

It is an arithmetic number, because the mean of its divisors is an integer number (298211399010).

Almost surely, 2^{20854625454312} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20854625454312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28628294304960).

20854625454312 is an abundant number, since it is smaller than the sum of its proper divisors (36401963155608).

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

20854625454312 is a wasteful number, since it uses less digits than its factorization.

20854625454312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72844 (or 72767 counting only the distinct ones).

The product of its (nonzero) digits is 9216000, while the sum is 51.

The spelling of 20854625454312 in words is "twenty trillion, eight hundred fifty-four billion, six hundred twenty-five million, four hundred fifty-four thousand, three hundred twelve".