11444421151 has 4 divisors (see below), whose sum is σ = 11444832832. Its totient is φ = 11444009472.

The previous prime is 11444421137. The next prime is 11444421161. The reversal of 11444421151 is 15112444411.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 11444421151 - 2²¹ = 11442323999 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11444421161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 160866 + ... + 220831.

It is an arithmetic number, because the mean of its divisors is an integer number (2861208208).

Almost surely, 2^11444421151 is an apocalyptic number.

11444421151 is a deficient number, since it is larger than the sum of its proper divisors (411681).

11444421151 is an equidigital number, since it uses as much as digits as its factorization.

11444421151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 411680.

The product of its digits is 2560, while the sum is 28.

Adding to 11444421151 its reverse (15112444411), we get a palindrome (26556865562).

The spelling of 11444421151 in words is "eleven billion, four hundred forty-four million, four hundred twenty-one thousand, one hundred fifty-one".