11654656217 has 2 divisors, whose sum is σ = 11654656218. Its totient is φ = 11654656216.

The previous prime is 11654656207. The next prime is 11654656241. The reversal of 11654656217 is 71265645611.

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., 10623218761 + 1031437456 = 103069^2 + 32116^2 .

It is a cyclic number.

It is not a de Polignac number, because 11654656217 - 2²⁶ = 11587547353 is a prime.

It is not a weakly prime, because it can be changed into another prime (11654656207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5827328108 + 5827328109.

It is an arithmetic number, because the mean of its divisors is an integer number (5827328109).

Almost surely, 2^11654656217 is an apocalyptic number.

It is an amenable number.

11654656217 is a deficient number, since it is larger than the sum of its proper divisors (1).

11654656217 is an equidigital number, since it uses as much as digits as its factorization.

11654656217 is an evil number, because the sum of its binary digits is even.

The product of its digits is 302400, while the sum is 44.

The spelling of 11654656217 in words is "eleven billion, six hundred fifty-four million, six hundred fifty-six thousand, two hundred seventeen".