11605550006663 has 4 divisors (see below), whose sum is σ = 11627740351368. Its totient is φ = 11583359661960.

The previous prime is 11605550006647. The next prime is 11605550006671. The reversal of 11605550006663 is 36660005550611.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 11605550006663 - 2⁴ = 11605550006647 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11605550006683) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11095171568 + ... + 11095172613.

It is an arithmetic number, because the mean of its divisors is an integer number (2906935087842).

Almost surely, 2^{11605550006663} is an apocalyptic number.

11605550006663 is a deficient number, since it is larger than the sum of its proper divisors (22190344705).

11605550006663 is an equidigital number, since it uses as much as digits as its factorization.

11605550006663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22190344704.

The product of its (nonzero) digits is 486000, while the sum is 44.

The spelling of 11605550006663 in words is "eleven trillion, six hundred five billion, five hundred fifty million, six thousand, six hundred sixty-three".