12776286889 has 2 divisors, whose sum is σ = 12776286890. Its totient is φ = 12776286888.

The previous prime is 12776286881. The next prime is 12776286923. The reversal of 12776286889 is 98868267721.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10021611664 + 2754675225 = 100108^2 + 52485^2 .

It is a cyclic number.

It is not a de Polignac number, because 12776286889 - 2³ = 12776286881 is a prime.

It is a super-3 number, since 3×12776286889³ (a number of 31 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12776286889.

It is not a weakly prime, because it can be changed into another prime (12776286881) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6388143444 + 6388143445.

It is an arithmetic number, because the mean of its divisors is an integer number (6388143445).

Almost surely, 2^12776286889 is an apocalyptic number.

It is an amenable number.

12776286889 is a deficient number, since it is larger than the sum of its proper divisors (1).

12776286889 is an equidigital number, since it uses as much as digits as its factorization.

12776286889 is an evil number, because the sum of its binary digits is even.

The product of its digits is 32514048, while the sum is 64.

The spelling of 12776286889 in words is "twelve billion, seven hundred seventy-six million, two hundred eighty-six thousand, eight hundred eighty-nine".