12789980209 has 16 divisors (see below), whose sum is σ = 13753784448. Its totient is φ = 11849916672.

The previous prime is 12789980197. The next prime is 12789980213. The reversal of 12789980209 is 90208998721.

It is a cyclic number.

It is not a de Polignac number, because 12789980209 - 2³¹ = 10642496561 is a prime.

It is a super-2 number, since 2×12789980209² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12789980209.

It is not an unprimeable number, because it can be changed into a prime (12789980219) by changing a digit.

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, 2271772 + ... + 2277394.

It is an arithmetic number, because the mean of its divisors is an integer number (859611528).

Almost surely, 2^12789980209 is an apocalyptic number.

It is an amenable number.

12789980209 is a deficient number, since it is larger than the sum of its proper divisors (963804239).

12789980209 is a wasteful number, since it uses less digits than its factorization.

12789980209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7704.

The product of its (nonzero) digits is 1306368, while the sum is 55.

The spelling of 12789980209 in words is "twelve billion, seven hundred eighty-nine million, nine hundred eighty thousand, two hundred nine".