20401204444 has 12 divisors (see below), whose sum is σ = 35760929344. Its totient is φ = 10183796064.

The previous prime is 20401204427. The next prime is 20401204477. The reversal of 20401204444 is 44440210402.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4198809 + ... + 4203664.

Almost surely, 2^20401204444 is an apocalyptic number.

It is an amenable number.

20401204444 is a deficient number, since it is larger than the sum of its proper divisors (15359724900).

20401204444 is a wasteful number, since it uses less digits than its factorization.

20401204444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8403084 (or 8403082 counting only the distinct ones).

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

Adding to 20401204444 its reverse (44440210402), we get a palindrome (64841414846).

The spelling of 20401204444 in words is "twenty billion, four hundred one million, two hundred four thousand, four hundred forty-four".