11164320641 has 2 divisors, whose sum is σ = 11164320642. Its totient is φ = 11164320640.

The previous prime is 11164320593. The next prime is 11164320647. The reversal of 11164320641 is 14602346111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10420122241 + 744198400 = 102079^2 + 27280^2 .

It is a cyclic number.

It is not a de Polignac number, because 11164320641 - 2⁶ = 11164320577 is a prime.

It is not a weakly prime, because it can be changed into another prime (11164320647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5582160320 + 5582160321.

It is an arithmetic number, because the mean of its divisors is an integer number (5582160321).

Almost surely, 2^11164320641 is an apocalyptic number.

It is an amenable number.

11164320641 is a deficient number, since it is larger than the sum of its proper divisors (1).

11164320641 is an equidigital number, since it uses as much as digits as its factorization.

11164320641 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3456, while the sum is 29.

Adding to 11164320641 its reverse (14602346111), we get a palindrome (25766666752).

The spelling of 11164320641 in words is "eleven billion, one hundred sixty-four million, three hundred twenty thousand, six hundred forty-one".