11969736695009 has 2 divisors, whose sum is σ = 11969736695010. Its totient is φ = 11969736695008.

The previous prime is 11969736694997. The next prime is 11969736695011. The reversal of 11969736695009 is 90059663796911.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11809724694784 + 160012000225 = 3436528^2 + 400015^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11969736695009 is a prime.

Together with 11969736695011, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (11969736695039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5984868347504 + 5984868347505.

It is an arithmetic number, because the mean of its divisors is an integer number (5984868347505).

Almost surely, 2^{11969736695009} is an apocalyptic number.

It is an amenable number.

11969736695009 is a deficient number, since it is larger than the sum of its proper divisors (1).

11969736695009 is an equidigital number, since it uses as much as digits as its factorization.

11969736695009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 148803480, while the sum is 71.

The spelling of 11969736695009 in words is "eleven trillion, nine hundred sixty-nine billion, seven hundred thirty-six million, six hundred ninety-five thousand, nine".