12866745533 has 16 divisors (see below), whose sum is σ = 13068316800. Its totient is φ = 12667026240.

The previous prime is 12866745503. The next prime is 12866745611. The reversal of 12866745533 is 33554766821.

It is a cyclic number.

It is not a de Polignac number, because 12866745533 - 2¹⁶ = 12866679997 is a prime.

It is a super-2 number, since 2×12866745533² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12866745503) 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, 18147383 + ... + 18148091.

It is an arithmetic number, because the mean of its divisors is an integer number (816769800).

Almost surely, 2^12866745533 is an apocalyptic number.

It is an amenable number.

12866745533 is a deficient number, since it is larger than the sum of its proper divisors (201571267).

12866745533 is a wasteful number, since it uses less digits than its factorization.

12866745533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1652.

The product of its digits is 3628800, while the sum is 50.

The spelling of 12866745533 in words is "twelve billion, eight hundred sixty-six million, seven hundred forty-five thousand, five hundred thirty-three".