12808981785599 has 2 divisors, whose sum is σ = 12808981785600. Its totient is φ = 12808981785598.

The previous prime is 12808981785557. The next prime is 12808981785601. The reversal of 12808981785599 is 99558718980821.

It is a strong prime.

It is an emirp because it is prime and its reverse (99558718980821) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12808981785599 - 2³² = 12804686818303 is a prime.

Together with 12808981785601, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12808981785199) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6404490892799 + 6404490892800.

It is an arithmetic number, because the mean of its divisors is an integer number (6404490892800).

Almost surely, 2^{12808981785599} is an apocalyptic number.

12808981785599 is a deficient number, since it is larger than the sum of its proper divisors (1).

12808981785599 is an equidigital number, since it uses as much as digits as its factorization.

12808981785599 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1045094400, while the sum is 80.

The spelling of 12808981785599 in words is "twelve trillion, eight hundred eight billion, nine hundred eighty-one million, seven hundred eighty-five thousand, five hundred ninety-nine".