11579410561 has 2 divisors, whose sum is σ = 11579410562. Its totient is φ = 11579410560.

The previous prime is 11579410537. The next prime is 11579410631. The reversal of 11579410561 is 16501497511.

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., 11349706225 + 229704336 = 106535^2 + 15156^2 .

It is a cyclic number.

It is not a de Polignac number, because 11579410561 - 2¹⁵ = 11579377793 is a prime.

It is not a weakly prime, because it can be changed into another prime (11579410511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5789705280 + 5789705281.

It is an arithmetic number, because the mean of its divisors is an integer number (5789705281).

Almost surely, 2^11579410561 is an apocalyptic number.

It is an amenable number.

11579410561 is a deficient number, since it is larger than the sum of its proper divisors (1).

11579410561 is an equidigital number, since it uses as much as digits as its factorization.

11579410561 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 37800, while the sum is 40.

The spelling of 11579410561 in words is "eleven billion, five hundred seventy-nine million, four hundred ten thousand, five hundred sixty-one".