11909552687779 has 2 divisors, whose sum is σ = 11909552687780. Its totient is φ = 11909552687778.

The previous prime is 11909552687723. The next prime is 11909552687849. The reversal of 11909552687779 is 97778625590911.

It is a weak prime.

It is an emirp because it is prime and its reverse (97778625590911) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11909552687779 - 2¹⁹ = 11909552163491 is a prime.

It is not a weakly prime, because it can be changed into another prime (11909552681779) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5954776343889 + 5954776343890.

It is an arithmetic number, because the mean of its divisors is an integer number (5954776343890).

Almost surely, 2^{11909552687779} is an apocalyptic number.

11909552687779 is a deficient number, since it is larger than the sum of its proper divisors (1).

11909552687779 is an equidigital number, since it uses as much as digits as its factorization.

11909552687779 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 600112800, while the sum is 76.

The spelling of 11909552687779 in words is "eleven trillion, nine hundred nine billion, five hundred fifty-two million, six hundred eighty-seven thousand, seven hundred seventy-nine".