20201144144 has 10 divisors (see below), whose sum is σ = 39139716810. Its totient is φ = 10100572064.

The previous prime is 20201144077. The next prime is 20201144167. The reversal of 20201144144 is 44144110202.

It can be written as a sum of positive squares in only one way, i.e., 13662804544 + 6538339600 = 116888^2 + 80860^2 .

It is a congruent number.

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 as a sum of consecutive naturals, namely, 631285739 + ... + 631285770.

It is an arithmetic number, because the mean of its divisors is an integer number (3913971681).

Almost surely, 2^20201144144 is an apocalyptic number.

It is an amenable number.

20201144144 is a deficient number, since it is larger than the sum of its proper divisors (18938572666).

20201144144 is a wasteful number, since it uses less digits than its factorization.

20201144144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1262571517 (or 1262571511 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 23.

Adding to 20201144144 its reverse (44144110202), we get a palindrome (64345254346).

The spelling of 20201144144 in words is "twenty billion, two hundred one million, one hundred forty-four thousand, one hundred forty-four".