12105303408 has 120 divisors (see below), whose sum is σ = 38903105280. Its totient is φ = 3475198080.

The previous prime is 12105303383. The next prime is 12105303421. The reversal of 12105303408 is 80430350121.

It is a happy number.

12105303408 is a `hidden beast` number, since 121 + 0 + 530 + 3 + 4 + 0 + 8 = 666.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 171016 + ... + 231207.

It is an arithmetic number, because the mean of its divisors is an integer number (324192544).

Almost surely, 2^12105303408 is an apocalyptic number.

12105303408 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

12105303408 is an abundant number, since it is smaller than the sum of its proper divisors (26797801872).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12105303408 is a wasteful number, since it uses less digits than its factorization.

12105303408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 402267 (or 402258 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

Adding to 12105303408 its reverse (80430350121), we get a palindrome (92535653529).

It can be divided in two parts, 12105 and 303408, that added together give a palindrome (315513).

The spelling of 12105303408 in words is "twelve billion, one hundred five million, three hundred three thousand, four hundred eight".