20444424424 has 8 divisors (see below), whose sum is σ = 38333295810. Its totient is φ = 10222212208.

The previous prime is 20444424419. The next prime is 20444424467. The reversal of 20444424424 is 42442444402.

It can be written as a sum of positive squares in only one way, i.e., 20434702500 + 9721924 = 142950^2 + 3118^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 20444424424.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1277776519 + ... + 1277776534.

Almost surely, 2^20444424424 is an apocalyptic number.

It is an amenable number.

20444424424 is a deficient number, since it is larger than the sum of its proper divisors (17888871386).

20444424424 is a wasteful number, since it uses less digits than its factorization.

20444424424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2555553059 (or 2555553055 counting only the distinct ones).

The product of its (nonzero) digits is 131072, while the sum is 34.

Adding to 20444424424 its reverse (42442444402), we get a palindrome (62886868826).

It can be divided in two parts, 20 and 444424424, that added together give a palindrome (444424444).

The spelling of 20444424424 in words is "twenty billion, four hundred forty-four million, four hundred twenty-four thousand, four hundred twenty-four".