13423540440001 has 4 divisors (see below), whose sum is σ = 13423548114900. Its totient is φ = 13423532765104.

The previous prime is 13423540439987. The next prime is 13423540440073. The reversal of 13423540440001 is 10004404532431.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 9645372490000 + 3778167950001 = 3105700^2 + 1943751^2 .

It is a cyclic number.

It is not a de Polignac number, because 13423540440001 - 2⁹ = 13423540439489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13423547440001) 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, 206835 + ... + 5185543.

It is an arithmetic number, because the mean of its divisors is an integer number (3355887028725).

Almost surely, 2^{13423540440001} is an apocalyptic number.

It is an amenable number.

13423540440001 is a deficient number, since it is larger than the sum of its proper divisors (7674899).

13423540440001 is an equidigital number, since it uses as much as digits as its factorization.

13423540440001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7674898.

The product of its (nonzero) digits is 23040, while the sum is 31.

Adding to 13423540440001 its reverse (10004404532431), we get a palindrome (23427944972432).

The spelling of 13423540440001 in words is "thirteen trillion, four hundred twenty-three billion, five hundred forty million, four hundred forty thousand, one".