12045324561 has 16 divisors (see below), whose sum is σ = 16477359360. Its totient is φ = 7822740240.

The previous prime is 12045324509. The next prime is 12045324563. The reversal of 12045324561 is 16542354021.

It is not a de Polignac number, because 12045324561 - 2⁶ = 12045324497 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12045324563) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 74295 + ... + 172076.

It is an arithmetic number, because the mean of its divisors is an integer number (1029834960).

Almost surely, 2^12045324561 is an apocalyptic number.

It is an amenable number.

12045324561 is a deficient number, since it is larger than the sum of its proper divisors (4432034799).

12045324561 is a wasteful number, since it uses less digits than its factorization.

12045324561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 246796.

The product of its (nonzero) digits is 28800, while the sum is 33.

Adding to 12045324561 its reverse (16542354021), we get a palindrome (28587678582).

The spelling of 12045324561 in words is "twelve billion, forty-five million, three hundred twenty-four thousand, five hundred sixty-one".