13440243314123 has 4 divisors (see below), whose sum is σ = 13472320267560. Its totient is φ = 13408166360688.

The previous prime is 13440243314119. The next prime is 13440243314153. The reversal of 13440243314123 is 32141334204431.

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 13440243314123 - 2² = 13440243314119 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13440243314153) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16038476090 + ... + 16038476927.

It is an arithmetic number, because the mean of its divisors is an integer number (3368080066890).

Almost surely, 2^{13440243314123} is an apocalyptic number.

13440243314123 is a deficient number, since it is larger than the sum of its proper divisors (32076953437).

13440243314123 is an equidigital number, since it uses as much as digits as its factorization.

13440243314123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32076953436.

The product of its (nonzero) digits is 82944, while the sum is 35.

Adding to 13440243314123 its reverse (32141334204431), we get a palindrome (45581577518554).

The spelling of 13440243314123 in words is "thirteen trillion, four hundred forty billion, two hundred forty-three million, three hundred fourteen thousand, one hundred twenty-three".