11382563495521 has 2 divisors, whose sum is σ = 11382563495522. Its totient is φ = 11382563495520.

The previous prime is 11382563495491. The next prime is 11382563495561. The reversal of 11382563495521 is 12559436528311.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11131398140625 + 251165354896 = 3336375^2 + 501164^2 .

It is an emirp because it is prime and its reverse (12559436528311) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11382563495521 - 2¹⁹ = 11382562971233 is a prime.

It is a super-2 number, since 2×11382563495521² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (11382563495561) 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, 5691281747760 + 5691281747761.

It is an arithmetic number, because the mean of its divisors is an integer number (5691281747761).

Almost surely, 2^{11382563495521} is an apocalyptic number.

It is an amenable number.

11382563495521 is a deficient number, since it is larger than the sum of its proper divisors (1).

11382563495521 is an equidigital number, since it uses as much as digits as its factorization.

11382563495521 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7776000, while the sum is 55.

The spelling of 11382563495521 in words is "eleven trillion, three hundred eighty-two billion, five hundred sixty-three million, four hundred ninety-five thousand, five hundred twenty-one".