13245442109 has 4 divisors (see below), whose sum is σ = 13251408060. Its totient is φ = 13239476160.

The previous prime is 13245442097. The next prime is 13245442117. The reversal of 13245442109 is 90124454231.

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 9825765625 + 3419676484 = 99125^2 + 58478^2 .

It is a cyclic number.

It is not a de Polignac number, because 13245442109 - 2²⁴ = 13228664893 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13245442909) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2979644 + ... + 2984085.

It is an arithmetic number, because the mean of its divisors is an integer number (3312852015).

Almost surely, 2^13245442109 is an apocalyptic number.

It is an amenable number.

13245442109 is a deficient number, since it is larger than the sum of its proper divisors (5965951).

13245442109 is an equidigital number, since it uses as much as digits as its factorization.

13245442109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5965950.

The product of its (nonzero) digits is 34560, while the sum is 35.

The spelling of 13245442109 in words is "thirteen billion, two hundred forty-five million, four hundred forty-two thousand, one hundred nine".