12809764539 has 24 divisors (see below), whose sum is σ = 21737784432. Its totient is φ = 7166301120.

The previous prime is 12809764531. The next prime is 12809764553. The reversal of 12809764539 is 93546790821.

12809764539 is a `hidden beast` number, since 12 + 8 + 0 + 97 + 6 + 4 + 539 = 666.

It is not a de Polignac number, because 12809764539 - 2³ = 12809764531 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12809764531) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 4975312 + ... + 4977885.

It is an arithmetic number, because the mean of its divisors is an integer number (905741018).

It is a 1-persistent number, because it is pandigital, but 2⋅12809764539 = 25619529078 is not.

Almost surely, 2^12809764539 is an apocalyptic number.

12809764539 is a deficient number, since it is larger than the sum of its proper divisors (8928019893).

12809764539 is a wasteful number, since it uses less digits than its factorization.

12809764539 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9953227 (or 9953224 counting only the distinct ones).

The product of its (nonzero) digits is 3265920, while the sum is 54.

The spelling of 12809764539 in words is "twelve billion, eight hundred nine million, seven hundred sixty-four thousand, five hundred thirty-nine".