13144440123 has 12 divisors (see below), whose sum is σ = 18988500960. Its totient is φ = 8761996656.

The previous prime is 13144440119. The next prime is 13144440173. The reversal of 13144440123 is 32104444131.

It is not a de Polignac number, because 13144440123 - 2² = 13144440119 is a prime.

It is a super-2 number, since 2×13144440123² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (13144440173) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11665 + ... + 162557.

It is an arithmetic number, because the mean of its divisors is an integer number (1582375080).

Almost surely, 2^13144440123 is an apocalyptic number.

13144440123 is a deficient number, since it is larger than the sum of its proper divisors (5844060837).

13144440123 is a wasteful number, since it uses less digits than its factorization.

13144440123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160578 (or 160575 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

Adding to 13144440123 its reverse (32104444131), we get a palindrome (45248884254).

The spelling of 13144440123 in words is "thirteen billion, one hundred forty-four million, four hundred forty thousand, one hundred twenty-three".