12005405255109 has 8 divisors (see below), whose sum is σ = 18293950864960. Its totient is φ = 6860231574336.

The previous prime is 12005405255099. The next prime is 12005405255113. The reversal of 12005405255109 is 90155250450021.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12005405255109 - 2¹⁹ = 12005404730821 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 (12005405255189) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 285842982244 + ... + 285842982285.

It is an arithmetic number, because the mean of its divisors is an integer number (2286743858120).

Almost surely, 2^{12005405255109} is an apocalyptic number.

It is an amenable number.

12005405255109 is a deficient number, since it is larger than the sum of its proper divisors (6288545609851).

12005405255109 is an equidigital number, since it uses as much as digits as its factorization.

12005405255109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 571685964539.

The product of its (nonzero) digits is 90000, while the sum is 39.

The spelling of 12005405255109 in words is "twelve trillion, five billion, four hundred five million, two hundred fifty-five thousand, one hundred nine".