20404201444 has 18 divisors (see below), whose sum is σ = 39248578502. Its totient is φ = 9274636800.

The previous prime is 20404201423. The next prime is 20404201451. The reversal of 20404201444 is 44410240402.

It can be written as a sum of positive squares in only one way, i.e., 13616089344 + 6788112100 = 116688^2 + 82390^2 .

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 5 ways as a sum of consecutive naturals, for example, 21078237 + ... + 21079204.

Almost surely, 2^20404201444 is an apocalyptic number.

It is an amenable number.

20404201444 is a deficient number, since it is larger than the sum of its proper divisors (18844377058).

20404201444 is a wasteful number, since it uses less digits than its factorization.

20404201444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42157467 (or 42157454 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 25.

Adding to 20404201444 its reverse (44410240402), we get a palindrome (64814441846).

The spelling of 20404201444 in words is "twenty billion, four hundred four million, two hundred one thousand, four hundred forty-four".