12143412405 has 16 divisors (see below), whose sum is σ = 21588288960. Its totient is φ = 6476486544.

The previous prime is 12143412401. The next prime is 12143412497. The reversal of 12143412405 is 50421434121.

12143412405 is a `hidden beast` number, since 1 + 214 + 3 + 41 + 2 + 405 = 666.

It is not a de Polignac number, because 12143412405 - 2² = 12143412401 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12143412401) 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 15 ways as a sum of consecutive naturals, for example, 44975467 + ... + 44975736.

It is an arithmetic number, because the mean of its divisors is an integer number (1349268060).

Almost surely, 2^12143412405 is an apocalyptic number.

12143412405 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12143412405 is a deficient number, since it is larger than the sum of its proper divisors (9444876555).

12143412405 is an equidigital number, since it uses as much as digits as its factorization.

12143412405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89951217 (or 89951211 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

Adding to 12143412405 its reverse (50421434121), we get a palindrome (62564846526).

The spelling of 12143412405 in words is "twelve billion, one hundred forty-three million, four hundred twelve thousand, four hundred five".