12011678369 has 2 divisors, whose sum is σ = 12011678370. Its totient is φ = 12011678368.

The previous prime is 12011678363. The next prime is 12011678383. The reversal of 12011678369 is 96387611021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11733222400 + 278455969 = 108320^2 + 16687^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12011678369 is a prime.

It is a super-2 number, since 2×12011678369² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (12011678363) 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, 6005839184 + 6005839185.

It is an arithmetic number, because the mean of its divisors is an integer number (6005839185).

Almost surely, 2^12011678369 is an apocalyptic number.

It is an amenable number.

12011678369 is a deficient number, since it is larger than the sum of its proper divisors (1).

12011678369 is an equidigital number, since it uses as much as digits as its factorization.

12011678369 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108864, while the sum is 44.

The spelling of 12011678369 in words is "twelve billion, eleven million, six hundred seventy-eight thousand, three hundred sixty-nine".