13444401311 has 16 divisors (see below), whose sum is σ = 15446505600. Its totient is φ = 11572941600.

The previous prime is 13444401293. The next prime is 13444401317. The reversal of 13444401311 is 11310444431.

It is a happy number.

It is not a de Polignac number, because 13444401311 - 2¹⁰ = 13444400287 is a prime.

It is a super-2 number, since 2×13444401311² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13444401317) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 416876 + ... + 447966.

It is an arithmetic number, because the mean of its divisors is an integer number (965406600).

Almost surely, 2^13444401311 is an apocalyptic number.

13444401311 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

13444401311 is a deficient number, since it is larger than the sum of its proper divisors (2002104289).

13444401311 is a wasteful number, since it uses less digits than its factorization.

13444401311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33190.

The product of its (nonzero) digits is 2304, while the sum is 26.

Adding to 13444401311 its reverse (11310444431), we get a palindrome (24754845742).

The spelling of 13444401311 in words is "thirteen billion, four hundred forty-four million, four hundred one thousand, three hundred eleven".