20001444444143 has 2 divisors, whose sum is σ = 20001444444144. Its totient is φ = 20001444444142.

The previous prime is 20001444444103. The next prime is 20001444444151. The reversal of 20001444444143 is 34144444410002.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20001444444143 - 2¹⁰ = 20001444443119 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20001444444103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10000722222071 + 10000722222072.

It is an arithmetic number, because the mean of its divisors is an integer number (10000722222072).

Almost surely, 2^{20001444444143} is an apocalyptic number.

20001444444143 is a deficient number, since it is larger than the sum of its proper divisors (1).

20001444444143 is an equidigital number, since it uses as much as digits as its factorization.

20001444444143 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 98304, while the sum is 35.

Adding to 20001444444143 its reverse (34144444410002), we get a palindrome (54145888854145).

The spelling of 20001444444143 in words is "twenty trillion, one billion, four hundred forty-four million, four hundred forty-four thousand, one hundred forty-three".