12655768969 has 2 divisors, whose sum is σ = 12655768970. Its totient is φ = 12655768968.

The previous prime is 12655768963. The next prime is 12655768973. The reversal of 12655768969 is 96986755621.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12642078969 + 13690000 = 112437^2 + 3700^2 .

It is a cyclic number.

It is not a de Polignac number, because 12655768969 - 2⁷ = 12655768841 is a prime.

It is a super-2 number, since 2×12655768969² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12655768969.

It is not a weakly prime, because it can be changed into another prime (12655768963) 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 as a sum of consecutive naturals, namely, 6327884484 + 6327884485.

It is an arithmetic number, because the mean of its divisors is an integer number (6327884485).

Almost surely, 2^12655768969 is an apocalyptic number.

It is an amenable number.

12655768969 is a deficient number, since it is larger than the sum of its proper divisors (1).

12655768969 is an equidigital number, since it uses as much as digits as its factorization.

12655768969 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 48988800, while the sum is 64.

The spelling of 12655768969 in words is "twelve billion, six hundred fifty-five million, seven hundred sixty-eight thousand, nine hundred sixty-nine".