20444363515452 has 144 divisors (see below), whose sum is σ = 52567761093120. Its totient is φ = 6178268928000.

The previous prime is 20444363515441. The next prime is 20444363515487. The reversal of 20444363515452 is 25451536344402.

It is a congruent number.

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, 10322827 + ... + 12142877.

It is an arithmetic number, because the mean of its divisors is an integer number (365053896480).

Almost surely, 2^{20444363515452} 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 20444363515452, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26283880546560).

20444363515452 is an abundant number, since it is smaller than the sum of its proper divisors (32123397577668).

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

20444363515452 is a wasteful number, since it uses less digits than its factorization.

20444363515452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1820212 (or 1820193 counting only the distinct ones).

The product of its (nonzero) digits is 6912000, while the sum is 48.

Adding to 20444363515452 its reverse (25451536344402), we get a palindrome (45895899859854).

The spelling of 20444363515452 in words is "twenty trillion, four hundred forty-four billion, three hundred sixty-three million, five hundred fifteen thousand, four hundred fifty-two".