11663072217 has 12 divisors (see below), whose sum is σ = 16849151280. Its totient is φ = 7774231608.

The previous prime is 11663072153. The next prime is 11663072237. The reversal of 11663072217 is 71227036611.

It is a happy number.

11663072217 is a `hidden beast` number, since 1 + 1 + 6 + 630 + 7 + 2 + 2 + 17 = 666.

It is not a de Polignac number, because 11663072217 - 2⁶ = 11663072153 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11663072237) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 29143 + ... + 155484.

It is an arithmetic number, because the mean of its divisors is an integer number (1404095940).

Almost surely, 2^11663072217 is an apocalyptic number.

It is an amenable number.

11663072217 is a deficient number, since it is larger than the sum of its proper divisors (5186079063).

11663072217 is a wasteful number, since it uses less digits than its factorization.

11663072217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 191652 (or 191649 counting only the distinct ones).

The product of its (nonzero) digits is 21168, while the sum is 36.

The spelling of 11663072217 in words is "eleven billion, six hundred sixty-three million, seventy-two thousand, two hundred seventeen".