11772550417 has 2 divisors, whose sum is σ = 11772550418. Its totient is φ = 11772550416.

The previous prime is 11772550379. The next prime is 11772550451. The reversal of 11772550417 is 71405527711.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7430267601 + 4342282816 = 86199^2 + 65896^2 .

It is a cyclic number.

It is not a de Polignac number, because 11772550417 - 2⁷ = 11772550289 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11772550417.

It is not a weakly prime, because it can be changed into another prime (11772550487) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5886275208 + 5886275209.

It is an arithmetic number, because the mean of its divisors is an integer number (5886275209).

Almost surely, 2^11772550417 is an apocalyptic number.

It is an amenable number.

11772550417 is a deficient number, since it is larger than the sum of its proper divisors (1).

11772550417 is an equidigital number, since it uses as much as digits as its factorization.

11772550417 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 68600, while the sum is 40.

The spelling of 11772550417 in words is "eleven billion, seven hundred seventy-two million, five hundred fifty thousand, four hundred seventeen".