20144431444 has 24 divisors (see below), whose sum is σ = 35316465408. Its totient is φ = 10054033920.

The previous prime is 20144431423. The next prime is 20144431459. The reversal of 20144431444 is 44413444102.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9399037 + ... + 9401179.

It is an arithmetic number, because the mean of its divisors is an integer number (1471519392).

Almost surely, 2^20144431444 is an apocalyptic number.

It is an amenable number.

20144431444 is a deficient number, since it is larger than the sum of its proper divisors (15172033964).

20144431444 is a wasteful number, since it uses less digits than its factorization.

20144431444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5295 (or 5293 counting only the distinct ones).

The product of its (nonzero) digits is 24576, while the sum is 31.

Adding to 20144431444 its reverse (44413444102), we get a palindrome (64557875546).

The spelling of 20144431444 in words is "twenty billion, one hundred forty-four million, four hundred thirty-one thousand, four hundred forty-four".