12045523505 has 8 divisors (see below), whose sum is σ = 14455217472. Its totient is φ = 9636025968.

The previous prime is 12045523481. The next prime is 12045523507. The reversal of 12045523505 is 50532554021.

12045523505 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 12045523505 - 2¹⁰ = 12045522481 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12045523507) 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, 212822 + ... + 263408.

It is an arithmetic number, because the mean of its divisors is an integer number (1806902184).

Almost surely, 2^12045523505 is an apocalyptic number.

It is an amenable number.

12045523505 is a deficient number, since it is larger than the sum of its proper divisors (2409693967).

12045523505 is an equidigital number, since it uses as much as digits as its factorization.

12045523505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98215.

The product of its (nonzero) digits is 30000, while the sum is 32.

The spelling of 12045523505 in words is "twelve billion, forty-five million, five hundred twenty-three thousand, five hundred five".