12533020505 has 16 divisors (see below), whose sum is σ = 15989633280. Its totient is φ = 9409528128.

The previous prime is 12533020477. The next prime is 12533020529. The reversal of 12533020505 is 50502033521.

It is a cyclic number.

It is not a de Polignac number, because 12533020505 - 2¹⁸ = 12532758361 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1022045 + ... + 1034234.

It is an arithmetic number, because the mean of its divisors is an integer number (999352080).

Almost surely, 2^12533020505 is an apocalyptic number.

It is an amenable number.

12533020505 is a deficient number, since it is larger than the sum of its proper divisors (3456612775).

12533020505 is a wasteful number, since it uses less digits than its factorization.

12533020505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2056360.

The product of its (nonzero) digits is 4500, while the sum is 26.

The spelling of 12533020505 in words is "twelve billion, five hundred thirty-three million, twenty thousand, five hundred five".