12207987769 has 2 divisors, whose sum is σ = 12207987770. Its totient is φ = 12207987768.

The previous prime is 12207987739. The next prime is 12207987811. The reversal of 12207987769 is 96778970221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6995147769 + 5212840000 = 83637^2 + 72200^2 .

It is a cyclic number.

It is not a de Polignac number, because 12207987769 - 2¹⁷ = 12207856697 is a prime.

It is a super-2 number, since 2×12207987769² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (12207987709) 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, 6103993884 + 6103993885.

It is an arithmetic number, because the mean of its divisors is an integer number (6103993885).

Almost surely, 2^12207987769 is an apocalyptic number.

It is an amenable number.

12207987769 is a deficient number, since it is larger than the sum of its proper divisors (1).

12207987769 is an equidigital number, since it uses as much as digits as its factorization.

12207987769 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5334336, while the sum is 58.

The spelling of 12207987769 in words is "twelve billion, two hundred seven million, nine hundred eighty-seven thousand, seven hundred sixty-nine".