11778902689 has 2 divisors, whose sum is σ = 11778902690. Its totient is φ = 11778902688.

The previous prime is 11778902683. The next prime is 11778902713. The reversal of 11778902689 is 98620987711.

11778902689 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9333105664 + 2445797025 = 96608^2 + 49455^2 .

It is a cyclic number.

It is not a de Polignac number, because 11778902689 - 2⁷ = 11778902561 is a prime.

It is not a weakly prime, because it can be changed into another prime (11778902683) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5889451344 + 5889451345.

It is an arithmetic number, because the mean of its divisors is an integer number (5889451345).

Almost surely, 2^11778902689 is an apocalyptic number.

It is an amenable number.

11778902689 is a deficient number, since it is larger than the sum of its proper divisors (1).

11778902689 is an equidigital number, since it uses as much as digits as its factorization.

11778902689 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3048192, while the sum is 58.

The spelling of 11778902689 in words is "eleven billion, seven hundred seventy-eight million, nine hundred two thousand, six hundred eighty-nine".