20130144244 has 144 divisors (see below), whose sum is σ = 45543496320. Its totient is φ = 7578869760.

The previous prime is 20130144239. The next prime is 20130144299. The reversal of 20130144244 is 44244103102.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 71637384 + ... + 71637664.

It is an arithmetic number, because the mean of its divisors is an integer number (316274280).

Almost surely, 2^20130144244 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 20130144244, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22771748160).

20130144244 is an abundant number, since it is smaller than the sum of its proper divisors (25413352076).

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

20130144244 is a wasteful number, since it uses less digits than its factorization.

20130144244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 506 (or 415 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 25.

Adding to 20130144244 its reverse (44244103102), we get a palindrome (64374247346).

The spelling of 20130144244 in words is "twenty billion, one hundred thirty million, one hundred forty-four thousand, two hundred forty-four".