11663533536611 has 8 divisors (see below), whose sum is σ = 12994575081984. Its totient is φ = 10377612043720.

The previous prime is 11663533536521. The next prime is 11663533536623.

11663533536611 is nontrivially palindromic in base 10.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11663533536611 - 2¹⁸ = 11663533274467 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11663533536611.

It is not an unprimeable number, because it can be changed into a prime (11663533539611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11280012575 + ... + 11280013608.

It is an arithmetic number, because the mean of its divisors is an integer number (1624321885248).

Almost surely, 2^{11663533536611} is an apocalyptic number.

11663533536611 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

11663533536611 is a deficient number, since it is larger than the sum of its proper divisors (1331041545373).

11663533536611 is a wasteful number, since it uses less digits than its factorization.

11663533536611 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22560026241.

The product of its digits is 2624400, while the sum is 50.

The spelling of 11663533536611 in words is "eleven trillion, six hundred sixty-three billion, five hundred thirty-three million, five hundred thirty-six thousand, six hundred eleven".