13806568329 has 32 divisors (see below), whose sum is σ = 20122435200. Its totient is φ = 8390615040.

The previous prime is 13806568313. The next prime is 13806568333. The reversal of 13806568329 is 92386560831.

It is a happy number.

It is not a de Polignac number, because 13806568329 - 2⁴ = 13806568313 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (13806568379) 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 31 ways as a sum of consecutive naturals, for example, 130137 + ... + 211065.

It is an arithmetic number, because the mean of its divisors is an integer number (628826100).

Almost surely, 2^13806568329 is an apocalyptic number.

13806568329 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

13806568329 is a deficient number, since it is larger than the sum of its proper divisors (6315866871).

13806568329 is a wasteful number, since it uses less digits than its factorization.

13806568329 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81065.

The product of its (nonzero) digits is 1866240, while the sum is 51.

The spelling of 13806568329 in words is "thirteen billion, eight hundred six million, five hundred sixty-eight thousand, three hundred twenty-nine".