11044421513 has 4 divisors (see below), whose sum is σ = 11050702080. Its totient is φ = 11038140948.

The previous prime is 11044421503. The next prime is 11044421527. The reversal of 11044421513 is 31512444011.

11044421513 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 31512444011 = 2749 ⋅11463239.

It is a cyclic number.

It is not a de Polignac number, because 11044421513 - 2¹⁶ = 11044355977 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (11044421503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3137645 + ... + 3141162.

It is an arithmetic number, because the mean of its divisors is an integer number (2762675520).

Almost surely, 2^11044421513 is an apocalyptic number.

It is an amenable number.

11044421513 is a deficient number, since it is larger than the sum of its proper divisors (6280567).

11044421513 is an equidigital number, since it uses as much as digits as its factorization.

11044421513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6280566.

The product of its (nonzero) digits is 1920, while the sum is 26.

Adding to 11044421513 its reverse (31512444011), we get a palindrome (42556865524).

The spelling of 11044421513 in words is "eleven billion, forty-four million, four hundred twenty-one thousand, five hundred thirteen".