12340228905 has 48 divisors (see below), whose sum is σ = 22196638464. Its totient is φ = 6577096320.

The previous prime is 12340228897. The next prime is 12340228909. The reversal of 12340228905 is 50982204321.

It is a happy number.

12340228905 is a `hidden beast` number, since 1 + 2 + 340 + 228 + 90 + 5 = 666.

It is not a de Polignac number, because 12340228905 - 2³ = 12340228897 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12340228905.

It is not an unprimeable number, because it can be changed into a prime (12340228909) 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 47 ways as a sum of consecutive naturals, for example, 2776485 + ... + 2780925.

It is an arithmetic number, because the mean of its divisors is an integer number (462429968).

Almost surely, 2^12340228905 is an apocalyptic number.

12340228905 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12340228905 is a deficient number, since it is larger than the sum of its proper divisors (9856409559).

12340228905 is an equidigital number, since it uses as much as digits as its factorization.

12340228905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6748 (or 6736 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The spelling of 12340228905 in words is "twelve billion, three hundred forty million, two hundred twenty-eight thousand, nine hundred five".