12819711787 has 6 divisors (see below), whose sum is σ = 13529945508. Its totient is φ = 12144989772.

The previous prime is 12819711731. The next prime is 12819711811. The reversal of 12819711787 is 78711791821.

It is not a de Polignac number, because 12819711787 - 2²³ = 12811323179 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12819711287) 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 5 ways as a sum of consecutive naturals, for example, 17755473 + ... + 17756194.

It is an arithmetic number, because the mean of its divisors is an integer number (2254990918).

Almost surely, 2^12819711787 is an apocalyptic number.

12819711787 is a deficient number, since it is larger than the sum of its proper divisors (710233721).

12819711787 is an equidigital number, since it uses as much as digits as its factorization.

12819711787 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35511705 (or 35511686 counting only the distinct ones).

The product of its digits is 395136, while the sum is 52.

The spelling of 12819711787 in words is "twelve billion, eight hundred nineteen million, seven hundred eleven thousand, seven hundred eighty-seven".