20401444444 has 6 divisors (see below), whose sum is σ = 35702527784. Its totient is φ = 10200722220.

The previous prime is 20401444423. The next prime is 20401444451. The reversal of 20401444444 is 44444410402.

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 as a sum of consecutive naturals, namely, 2550180552 + ... + 2550180559.

Almost surely, 2^20401444444 is an apocalyptic number.

It is an amenable number.

20401444444 is a deficient number, since it is larger than the sum of its proper divisors (15301083340).

20401444444 is a wasteful number, since it uses less digits than its factorization.

20401444444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5100361115 (or 5100361113 counting only the distinct ones).

The product of its (nonzero) digits is 32768, while the sum is 31.

Adding to 20401444444 its reverse (44444410402), we get a palindrome (64845854846).

The spelling of 20401444444 in words is "twenty billion, four hundred one million, four hundred forty-four thousand, four hundred forty-four".