12808746879 has 4 divisors (see below), whose sum is σ = 17078329176. Its totient is φ = 8539164584.

The previous prime is 12808746871. The next prime is 12808746893. The reversal of 12808746879 is 97864780821.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12808746879 - 2³ = 12808746871 is a prime.

It is a super-2 number, since 2×12808746879² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12808746871) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2134791144 + ... + 2134791149.

It is an arithmetic number, because the mean of its divisors is an integer number (4269582294).

Almost surely, 2^12808746879 is an apocalyptic number.

12808746879 is a deficient number, since it is larger than the sum of its proper divisors (4269582297).

12808746879 is an equidigital number, since it uses as much as digits as its factorization.

12808746879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4269582296.

The product of its (nonzero) digits is 10838016, while the sum is 60.

The spelling of 12808746879 in words is "twelve billion, eight hundred eight million, seven hundred forty-six thousand, eight hundred seventy-nine".