13126345553 has 4 divisors (see below), whose sum is σ = 13145735220. Its totient is φ = 13106955888.

The previous prime is 13126345549. The next prime is 13126345577. The reversal of 13126345553 is 35554362131.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 12637581889 + 488763664 = 112417^2 + 22108^2 .

It is a cyclic number.

It is not a de Polignac number, because 13126345553 - 2² = 13126345549 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13126345543) 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, 9693818 + ... + 9695171.

It is an arithmetic number, because the mean of its divisors is an integer number (3286433805).

Almost surely, 2^13126345553 is an apocalyptic number.

It is an amenable number.

13126345553 is a deficient number, since it is larger than the sum of its proper divisors (19389667).

13126345553 is an equidigital number, since it uses as much as digits as its factorization.

13126345553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19389666.

The product of its digits is 162000, while the sum is 38.

The spelling of 13126345553 in words is "thirteen billion, one hundred twenty-six million, three hundred forty-five thousand, five hundred fifty-three".