11144441381 has 2 divisors, whose sum is σ = 11144441382. Its totient is φ = 11144441380.

The previous prime is 11144441359. The next prime is 11144441419. The reversal of 11144441381 is 18314444111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9324992356 + 1819449025 = 96566^2 + 42655^2 .

It is a cyclic number.

It is not a de Polignac number, because 11144441381 - 2¹⁰ = 11144440357 is a prime.

It is a super-2 number, since 2×11144441381² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11144441311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5572220690 + 5572220691.

It is an arithmetic number, because the mean of its divisors is an integer number (5572220691).

Almost surely, 2^11144441381 is an apocalyptic number.

It is an amenable number.

11144441381 is a deficient number, since it is larger than the sum of its proper divisors (1).

11144441381 is an equidigital number, since it uses as much as digits as its factorization.

11144441381 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6144, while the sum is 32.

Adding to 11144441381 its reverse (18314444111), we get a palindrome (29458885492).

The spelling of 11144441381 in words is "eleven billion, one hundred forty-four million, four hundred forty-one thousand, three hundred eighty-one".