20003320144 has 20 divisors (see below), whose sum is σ = 38980463796. Its totient is φ = 9943845632.

The previous prime is 20003320109. The next prime is 20003320157. The reversal of 20003320144 is 44102330002.

It can be written as a sum of positive squares in 2 ways, for example, as 17553070144 + 2450250000 = 132488^2 + 49500^2 .

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, 3610549 + ... + 3616084.

Almost surely, 2^20003320144 is an apocalyptic number.

It is an amenable number.

20003320144 is a deficient number, since it is larger than the sum of its proper divisors (18977143652).

20003320144 is a wasteful number, since it uses less digits than its factorization.

20003320144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7226814 (or 7226808 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 19.

Adding to 20003320144 its reverse (44102330002), we get a palindrome (64105650146).

The spelling of 20003320144 in words is "twenty billion, three million, three hundred twenty thousand, one hundred forty-four".