20502353114144 has 96 divisors (see below), whose sum is σ = 44565109872192. Its totient is φ = 9207378432000.

The previous prime is 20502353114141. The next prime is 20502353114161. The reversal of 20502353114144 is 44141135320502.

It is not an unprimeable number, because it can be changed into a prime (20502353114141) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9167804 + ... + 11182724.

It is an arithmetic number, because the mean of its divisors is an integer number (464219894502).

Almost surely, 2^{20502353114144} 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 20502353114144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22282554936096).

20502353114144 is an abundant number, since it is smaller than the sum of its proper divisors (24062756758048).

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

20502353114144 is a wasteful number, since it uses less digits than its factorization.

20502353114144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2015290 (or 2015282 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 35.

Adding to 20502353114144 its reverse (44141135320502), we get a palindrome (64643488434646).

The spelling of 20502353114144 in words is "twenty trillion, five hundred two billion, three hundred fifty-three million, one hundred fourteen thousand, one hundred forty-four".