20023454144 has 56 divisors (see below), whose sum is σ = 41131540800. Its totient is φ = 9660062720.

The previous prime is 20023454137. The next prime is 20023454179. The reversal of 20023454144 is 44145432002.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3971177 + ... + 3976215.

It is an arithmetic number, because the mean of its divisors is an integer number (734491800).

Almost surely, 2^20023454144 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 20023454144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20565770400).

20023454144 is an abundant number, since it is smaller than the sum of its proper divisors (21108086656).

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

20023454144 is a wasteful number, since it uses less digits than its factorization.

20023454144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7221 (or 7211 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 29.

Adding to 20023454144 its reverse (44145432002), we get a palindrome (64168886146).

The spelling of 20023454144 in words is "twenty billion, twenty-three million, four hundred fifty-four thousand, one hundred forty-four".