13243435816 has 16 divisors (see below), whose sum is σ = 26741553300. Its totient is φ = 6112354944.

The previous prime is 13243435801. The next prime is 13243435847. The reversal of 13243435816 is 61853434231.

It is a happy number.

13243435816 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 12989160900 + 254274916 = 113970^2 + 15946^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 63670261 + ... + 63670468.

Almost surely, 2^13243435816 is an apocalyptic number.

It is an amenable number.

13243435816 is an abundant number, since it is smaller than the sum of its proper divisors (13498117484).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13243435816 is a wasteful number, since it uses less digits than its factorization.

13243435816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127340748 (or 127340744 counting only the distinct ones).

The product of its digits is 207360, while the sum is 40.

The spelling of 13243435816 in words is "thirteen billion, two hundred forty-three million, four hundred thirty-five thousand, eight hundred sixteen".