12135410405 has 16 divisors (see below), whose sum is σ = 14974346880. Its totient is φ = 9434400192.

The previous prime is 12135410393. The next prime is 12135410471. The reversal of 12135410405 is 50401453121.

It is a cyclic number.

It is not a de Polignac number, because 12135410405 - 2¹⁰ = 12135409381 is a prime.

It is a congruent number.

It is an unprimeable number.

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, 113336 + ... + 192654.

It is an arithmetic number, because the mean of its divisors is an integer number (935896680).

Almost surely, 2^12135410405 is an apocalyptic number.

It is an amenable number.

12135410405 is a deficient number, since it is larger than the sum of its proper divisors (2838936475).

12135410405 is an equidigital number, since it uses as much as digits as its factorization.

12135410405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80188.

The product of its (nonzero) digits is 2400, while the sum is 26.

Adding to 12135410405 its reverse (50401453121), we get a palindrome (62536863526).

The spelling of 12135410405 in words is "twelve billion, one hundred thirty-five million, four hundred ten thousand, four hundred five".