20230522013440 has 144 divisors (see below), whose sum is σ = 50135593788000. Its totient is φ = 7812202151936.

The previous prime is 20230522013417. The next prime is 20230522013491. The reversal of 20230522013440 is 4431022503202.

It is a junction number, because it is equal to n+sod(n) for n = 20230522013399 and 20230522013408.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 349381611 + ... + 349439509.

It is an arithmetic number, because the mean of its divisors is an integer number (348163845750).

Almost surely, 2^{20230522013440} is an apocalyptic number.

20230522013440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20230522013440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25067796894000).

20230522013440 is an abundant number, since it is smaller than the sum of its proper divisors (29905071774560).

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

20230522013440 is an equidigital number, since it uses as much as digits as its factorization.

20230522013440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67362 (or 67348 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 28.

Adding to 20230522013440 its reverse (4431022503202), we get a palindrome (24661544516642).

The spelling of 20230522013440 in words is "twenty trillion, two hundred thirty billion, five hundred twenty-two million, thirteen thousand, four hundred forty".