12809816600 has 48 divisors (see below), whose sum is σ = 34037516400. Its totient is φ = 4391936640.

The previous prime is 12809816597. The next prime is 12809816603. The reversal of 12809816600 is 661890821.

It is an interprime number because it is at equal distance from previous prime (12809816597) and next prime (12809816603).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12809816603) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4573535 + ... + 4576334.

It is an arithmetic number, because the mean of its divisors is an integer number (709114925).

Almost surely, 2^12809816600 is an apocalyptic number.

12809816600 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12809816600 is an abundant number, since it is smaller than the sum of its proper divisors (21227699800).

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

12809816600 is a wasteful number, since it uses less digits than its factorization.

12809816600 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9149892 (or 9149883 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 41.

The spelling of 12809816600 in words is "twelve billion, eight hundred nine million, eight hundred sixteen thousand, six hundred".