11784217019749 has 2 divisors, whose sum is σ = 11784217019750. Its totient is φ = 11784217019748.

The previous prime is 11784217019719. The next prime is 11784217019779. The reversal of 11784217019749 is 94791071248711.

It is a balanced prime because it is at equal distance from previous prime (11784217019719) and next prime (11784217019779).

It can be written as a sum of positive squares in only one way, i.e., 7498385469124 + 4285831550625 = 2738318^2 + 2070225^2 .

It is a cyclic number.

It is not a de Polignac number, because 11784217019749 - 2⁵ = 11784217019717 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11784217019719) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5892108509874 + 5892108509875.

It is an arithmetic number, because the mean of its divisors is an integer number (5892108509875).

Almost surely, 2^{11784217019749} is an apocalyptic number.

It is an amenable number.

11784217019749 is a deficient number, since it is larger than the sum of its proper divisors (1).

11784217019749 is an equidigital number, since it uses as much as digits as its factorization.

11784217019749 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7112448, while the sum is 61.

The spelling of 11784217019749 in words is "eleven trillion, seven hundred eighty-four billion, two hundred seventeen million, nineteen thousand, seven hundred forty-nine".