11584795721 has 2 divisors, whose sum is σ = 11584795722. Its totient is φ = 11584795720.

The previous prime is 11584795699. The next prime is 11584795769. The reversal of 11584795721 is 12759748511.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7259892025 + 4324903696 = 85205^2 + 65764^2 .

It is an emirp because it is prime and its reverse (12759748511) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11584795721 - 2¹⁴ = 11584779337 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11584795721.

It is not a weakly prime, because it can be changed into another prime (11584795021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5792397860 + 5792397861.

It is an arithmetic number, because the mean of its divisors is an integer number (5792397861).

Almost surely, 2^11584795721 is an apocalyptic number.

It is an amenable number.

11584795721 is a deficient number, since it is larger than the sum of its proper divisors (1).

11584795721 is an equidigital number, since it uses as much as digits as its factorization.

11584795721 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 705600, while the sum is 50.

The spelling of 11584795721 in words is "eleven billion, five hundred eighty-four million, seven hundred ninety-five thousand, seven hundred twenty-one".