12005233144545 has 16 divisors (see below), whose sum is σ = 19208980365120. Its totient is φ = 6402588565824.

The previous prime is 12005233144519. The next prime is 12005233144559. The reversal of 12005233144545 is 54544133250021.

It is not a de Polignac number, because 12005233144545 - 2⁶ = 12005233144481 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12161950 + ... + 13111959.

It is an arithmetic number, because the mean of its divisors is an integer number (1200561272820).

Almost surely, 2^{12005233144545} is an apocalyptic number.

12005233144545 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12005233144545 is a deficient number, since it is larger than the sum of its proper divisors (7203747220575).

12005233144545 is a wasteful number, since it uses less digits than its factorization.

12005233144545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25305584.

The product of its (nonzero) digits is 288000, while the sum is 39.

Adding to 12005233144545 its reverse (54544133250021), we get a palindrome (66549366394566).

The spelling of 12005233144545 in words is "twelve trillion, five billion, two hundred thirty-three million, one hundred forty-four thousand, five hundred forty-five".