105565308329 has 4 divisors (see below), whose sum is σ = 113685716676. Its totient is φ = 97444899984.

The previous prime is 105565308287. The next prime is 105565308361. The reversal of 105565308329 is 923803565501.

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 23127413929 + 82437894400 = 152077^2 + 287120^2 .

It is a cyclic number.

It is not a de Polignac number, because 105565308329 - 2³² = 101270341033 is a prime.

It is a super-2 number, since 2×105565308329² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (105565308229) by changing a digit.

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, 4060204154 + ... + 4060204179.

It is an arithmetic number, because the mean of its divisors is an integer number (28421429169).

Almost surely, 2^105565308329 is an apocalyptic number.

It is an amenable number.

105565308329 is a deficient number, since it is larger than the sum of its proper divisors (8120408347).

105565308329 is an equidigital number, since it uses as much as digits as its factorization.

105565308329 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8120408346.

The product of its (nonzero) digits is 972000, while the sum is 47.

The spelling of 105565308329 in words is "one hundred five billion, five hundred sixty-five million, three hundred eight thousand, three hundred twenty-nine".