12809795818 has 8 divisors (see below), whose sum is σ = 19365990912. Its totient is φ = 6354465516.

The previous prime is 12809795777. The next prime is 12809795819. The reversal of 12809795818 is 81859790821.

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

It is not an unprimeable number, because it can be changed into a prime (12809795819) 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, 25215880 + ... + 25216387.

It is an arithmetic number, because the mean of its divisors is an integer number (2420748864).

Almost surely, 2^12809795818 is an apocalyptic number.

12809795818 is a deficient number, since it is larger than the sum of its proper divisors (6556195094).

12809795818 is a wasteful number, since it uses less digits than its factorization.

12809795818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50432396.

The product of its (nonzero) digits is 2903040, while the sum is 58.

The spelling of 12809795818 in words is "twelve billion, eight hundred nine million, seven hundred ninety-five thousand, eight hundred eighteen".