11404021361 has 2 divisors, whose sum is σ = 11404021362. Its totient is φ = 11404021360.

The previous prime is 11404021337. The next prime is 11404021397. The reversal of 11404021361 is 16312040411.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7341233761 + 4062787600 = 85681^2 + 63740^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11404021361 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (11404021061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5702010680 + 5702010681.

It is an arithmetic number, because the mean of its divisors is an integer number (5702010681).

Almost surely, 2^11404021361 is an apocalyptic number.

It is an amenable number.

11404021361 is a deficient number, since it is larger than the sum of its proper divisors (1).

11404021361 is an equidigital number, since it uses as much as digits as its factorization.

11404021361 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 576, while the sum is 23.

Adding to 11404021361 its reverse (16312040411), we get a palindrome (27716061772).

The spelling of 11404021361 in words is "eleven billion, four hundred four million, twenty-one thousand, three hundred sixty-one".