11945144194069 has 2 divisors, whose sum is σ = 11945144194070. Its totient is φ = 11945144194068.

The previous prime is 11945144194051. The next prime is 11945144194079. The reversal of 11945144194069 is 96049144154911.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6661881047844 + 5283263146225 = 2581062^2 + 2298535^2 .

It is a cyclic number.

It is not a de Polignac number, because 11945144194069 - 2⁵ = 11945144194037 is a prime.

It is a super-2 number, since 2×11945144194069² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11945144194079) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5972572097034 + 5972572097035.

It is an arithmetic number, because the mean of its divisors is an integer number (5972572097035).

Almost surely, 2^{11945144194069} is an apocalyptic number.

It is an amenable number.

11945144194069 is a deficient number, since it is larger than the sum of its proper divisors (1).

11945144194069 is an equidigital number, since it uses as much as digits as its factorization.

11945144194069 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5598720, while the sum is 58.

The spelling of 11945144194069 in words is "eleven trillion, nine hundred forty-five billion, one hundred forty-four million, one hundred ninety-four thousand, sixty-nine".