12809346100 has 18 divisors (see below), whose sum is σ = 27796281254. Its totient is φ = 5123738400.

The previous prime is 12809346097. The next prime is 12809346101. The reversal of 12809346100 is 164390821.

It can be written as a sum of positive squares in 3 ways, for example, as 745399204 + 12063946896 = 27302^2 + 109836^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12809346101) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 64046631 + ... + 64046830.

Almost surely, 2^12809346100 is an apocalyptic number.

12809346100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12809346100 is an abundant number, since it is smaller than the sum of its proper divisors (14986935154).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12809346100 is a wasteful number, since it uses less digits than its factorization.

12809346100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128093475 (or 128093468 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 34.

The spelling of 12809346100 in words is "twelve billion, eight hundred nine million, three hundred forty-six thousand, one hundred".