11985145349 has 2 divisors, whose sum is σ = 11985145350. Its totient is φ = 11985145348.

The previous prime is 11985145283. The next prime is 11985145391. The reversal of 11985145349 is 94354158911.

It is a happy number.

11985145349 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10528196449 + 1456948900 = 102607^2 + 38170^2 .

It is a cyclic number.

It is not a de Polignac number, because 11985145349 - 2³² = 7690178053 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11985145297 and 11985145306.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11985142349) 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, 5992572674 + 5992572675.

It is an arithmetic number, because the mean of its divisors is an integer number (5992572675).

Almost surely, 2^11985145349 is an apocalyptic number.

It is an amenable number.

11985145349 is a deficient number, since it is larger than the sum of its proper divisors (1).

11985145349 is an equidigital number, since it uses as much as digits as its factorization.

11985145349 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 777600, while the sum is 50.

The spelling of 11985145349 in words is "eleven billion, nine hundred eighty-five million, one hundred forty-five thousand, three hundred forty-nine".