12005312534 has 8 divisors (see below), whose sum is σ = 18012227688. Its totient is φ = 6001236640.

The previous prime is 12005312521. The next prime is 12005312597. The reversal of 12005312534 is 43521350021.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 699212 + ... + 716175.

It is an arithmetic number, because the mean of its divisors is an integer number (2251528461).

Almost surely, 2^12005312534 is an apocalyptic number.

12005312534 is a deficient number, since it is larger than the sum of its proper divisors (6006915154).

12005312534 is a wasteful number, since it uses less digits than its factorization.

12005312534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1419630.

The product of its (nonzero) digits is 3600, while the sum is 26.

Adding to 12005312534 its reverse (43521350021), we get a palindrome (55526662555).

The spelling of 12005312534 in words is "twelve billion, five million, three hundred twelve thousand, five hundred thirty-four".