20440144101 has 32 divisors (see below), whose sum is σ = 30025433088. Its totient is φ = 12289970880.

The previous prime is 20440144093. The next prime is 20440144129. The reversal of 20440144101 is 10144104402.

It is not a de Polignac number, because 20440144101 - 2³ = 20440144093 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20440144301) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 1103446 + ... + 1121816.

It is an arithmetic number, because the mean of its divisors is an integer number (938294784).

Almost surely, 2^20440144101 is an apocalyptic number.

It is an amenable number.

20440144101 is a deficient number, since it is larger than the sum of its proper divisors (9585288987).

20440144101 is a wasteful number, since it uses less digits than its factorization.

20440144101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19041.

The product of its (nonzero) digits is 512, while the sum is 21.

Adding to 20440144101 its reverse (10144104402), we get a palindrome (30584248503).

The spelling of 20440144101 in words is "twenty billion, four hundred forty million, one hundred forty-four thousand, one hundred one".