13409859816 has 24 divisors (see below), whose sum is σ = 36318370530. Its totient is φ = 4469953248.

The previous prime is 13409859803. The next prime is 13409859821. The reversal of 13409859816 is 61895890431.

13409859816 is a `hidden beast` number, since 1 + 3 + 40 + 9 + 8 + 598 + 1 + 6 = 666.

13409859816 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 only one way, i.e., 7198843716 + 6211016100 = 84846^2 + 78810^2 .

It is a tau number, because it is divible by the number of its divisors (24).

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 5 ways as a sum of consecutive naturals, for example, 93123955 + ... + 93124098.

Almost surely, 2^13409859816 is an apocalyptic number.

It is an amenable number.

13409859816 is an abundant number, since it is smaller than the sum of its proper divisors (22908510714).

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

13409859816 is a wasteful number, since it uses less digits than its factorization.

13409859816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 186248065 (or 186248058 counting only the distinct ones).

The product of its (nonzero) digits is 1866240, while the sum is 54.

The spelling of 13409859816 in words is "thirteen billion, four hundred nine million, eight hundred fifty-nine thousand, eight hundred sixteen".