12104400405 has 32 divisors (see below), whose sum is σ = 19561576320. Its totient is φ = 6390938880.

The previous prime is 12104400403. The next prime is 12104400437. The reversal of 12104400405 is 50400440121.

It is a happy number.

It is not a de Polignac number, because 12104400405 - 2¹ = 12104400403 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12104400403) 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, 2487675 + ... + 2492535.

It is an arithmetic number, because the mean of its divisors is an integer number (611299260).

Almost surely, 2^12104400405 is an apocalyptic number.

12104400405 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12104400405 is a deficient number, since it is larger than the sum of its proper divisors (7457175915).

12104400405 is a wasteful number, since it uses less digits than its factorization.

12104400405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6501.

The product of its (nonzero) digits is 640, while the sum is 21.

Adding to 12104400405 its reverse (50400440121), we get a palindrome (62504840526).

The spelling of 12104400405 in words is "twelve billion, one hundred four million, four hundred thousand, four hundred five".