20130144424 has 16 divisors (see below), whose sum is σ = 40647407220. Its totient is φ = 9290835840.

The previous prime is 20130144401. The next prime is 20130144427. The reversal of 20130144424 is 42444103102.

It can be written as a sum of positive squares in 2 ways, for example, as 15269544900 + 4860599524 = 123570^2 + 69718^2 .

It is not an unprimeable number, because it can be changed into a prime (20130144427) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 96779437 + ... + 96779644.

Almost surely, 2^20130144424 is an apocalyptic number.

It is an amenable number.

20130144424 is an abundant number, since it is smaller than the sum of its proper divisors (20517262796).

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

20130144424 is a wasteful number, since it uses less digits than its factorization.

20130144424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 193559100 (or 193559096 counting only the distinct ones).

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

Adding to 20130144424 its reverse (42444103102), we get a palindrome (62574247526).

The spelling of 20130144424 in words is "twenty billion, one hundred thirty million, one hundred forty-four thousand, four hundred twenty-four".