12005136456 has 32 divisors (see below), whose sum is σ = 30028125600. Its totient is φ = 3999674240.

The previous prime is 12005136427. The next prime is 12005136457. The reversal of 12005136456 is 65463150021.

12005136456 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (12005136457) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 78885 + ... + 173876.

It is an arithmetic number, because the mean of its divisors is an integer number (938378925).

Almost surely, 2^12005136456 is an apocalyptic number.

It is an amenable number.

12005136456 is an abundant number, since it is smaller than the sum of its proper divisors (18022989144).

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

12005136456 is a wasteful number, since it uses less digits than its factorization.

12005136456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 254749 (or 254745 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 33.

Adding to 12005136456 its reverse (65463150021), we get a palindrome (77468286477).

The spelling of 12005136456 in words is "twelve billion, five million, one hundred thirty-six thousand, four hundred fifty-six".