20454431205012 has 96 divisors (see below), whose sum is σ = 56354816630784. Its totient is φ = 5650566134400.

The previous prime is 20454431204983. The next prime is 20454431205041. The reversal of 20454431205012 is 21050213445402.

It is an interprime number because it is at equal distance from previous prime (20454431204983) and next prime (20454431205041).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 573039 + ... + 6421622.

It is an arithmetic number, because the mean of its divisors is an integer number (587029339904).

Almost surely, 2^{20454431205012} 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 20454431205012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28177408315392).

20454431205012 is an abundant number, since it is smaller than the sum of its proper divisors (35900385425772).

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

20454431205012 is a wasteful number, since it uses less digits than its factorization.

20454431205012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6995829 (or 6995827 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 33.

The spelling of 20454431205012 in words is "twenty trillion, four hundred fifty-four billion, four hundred thirty-one million, two hundred five thousand, twelve".