20132311111144 has 16 divisors (see below), whose sum is σ = 37748163043620. Its totient is φ = 10066134299520.

The previous prime is 20132311111021. The next prime is 20132311111147. The reversal of 20132311111144 is 44111111323102.

It can be written as a sum of positive squares in 2 ways, for example, as 19933885408644 + 198425702500 = 4464738^2 + 445450^2 .

It is not an unprimeable number, because it can be changed into a prime (20132311111147) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1810092 + ... + 6598564.

Almost surely, 2^{20132311111144} is an apocalyptic number.

It is an amenable number.

20132311111144 is a deficient number, since it is larger than the sum of its proper divisors (17615851932476).

20132311111144 is a wasteful number, since it uses less digits than its factorization.

20132311111144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5314020 (or 5314016 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 25.

Adding to 20132311111144 its reverse (44111111323102), we get a palindrome (64243422434246).

The spelling of 20132311111144 in words is "twenty trillion, one hundred thirty-two billion, three hundred eleven million, one hundred eleven thousand, one hundred forty-four".