11586657217 has 2 divisors, whose sum is σ = 11586657218. Its totient is φ = 11586657216.

The previous prime is 11586657211. The next prime is 11586657289. The reversal of 11586657217 is 71275668511.

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., 6404960961 + 5181696256 = 80031^2 + 71984^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11586657217 is a prime.

It is not a weakly prime, because it can be changed into another prime (11586657211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5793328608 + 5793328609.

It is an arithmetic number, because the mean of its divisors is an integer number (5793328609).

Almost surely, 2^11586657217 is an apocalyptic number.

It is an amenable number.

11586657217 is a deficient number, since it is larger than the sum of its proper divisors (1).

11586657217 is an equidigital number, since it uses as much as digits as its factorization.

11586657217 is an evil number, because the sum of its binary digits is even.

The product of its digits is 705600, while the sum is 49.

The spelling of 11586657217 in words is "eleven billion, five hundred eighty-six million, six hundred fifty-seven thousand, two hundred seventeen".