2001144438613 has 2 divisors, whose sum is σ = 2001144438614. Its totient is φ = 2001144438612.

The previous prime is 2001144438577. The next prime is 2001144438641. The reversal of 2001144438613 is 3168344411002.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1946602572849 + 54541865764 = 1395207^2 + 233542^2 .

It is a cyclic number.

It is not a de Polignac number, because 2001144438613 - 2¹⁷ = 2001144307541 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2001144435613) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1000572219306 + 1000572219307.

It is an arithmetic number, because the mean of its divisors is an integer number (1000572219307).

Almost surely, 2^{2001144438613} is an apocalyptic number.

It is an amenable number.

2001144438613 is a deficient number, since it is larger than the sum of its proper divisors (1).

2001144438613 is an equidigital number, since it uses as much as digits as its factorization.

2001144438613 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 55296, while the sum is 37.

Adding to 2001144438613 its reverse (3168344411002), we get a palindrome (5169488849615).

The spelling of 2001144438613 in words is "two trillion, one billion, one hundred forty-four million, four hundred thirty-eight thousand, six hundred thirteen".