12135305450 has 24 divisors (see below), whose sum is σ = 22587274560. Its totient is φ = 4850766000.

The previous prime is 12135305401. The next prime is 12135305467. The reversal of 12135305450 is 5450353121.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10226 + ... + 156125.

It is an arithmetic number, because the mean of its divisors is an integer number (941136440).

Almost surely, 2^12135305450 is an apocalyptic number.

12135305450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12135305450 is a deficient number, since it is larger than the sum of its proper divisors (10451969110).

12135305450 is a wasteful number, since it uses less digits than its factorization.

12135305450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 167822 (or 167817 counting only the distinct ones).

The product of its (nonzero) digits is 9000, while the sum is 29.

Adding to 12135305450 its reverse (5450353121), we get a palindrome (17585658571).

The spelling of 12135305450 in words is "twelve billion, one hundred thirty-five million, three hundred five thousand, four hundred fifty".