11663664205 has 8 divisors (see below), whose sum is σ = 14604936192. Its totient is φ = 8925238608.

The previous prime is 11663664191. The next prime is 11663664211. The reversal of 11663664205 is 50246636611.

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 11663664205 - 2¹³ = 11663656013 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50711469 + ... + 50711698.

It is an arithmetic number, because the mean of its divisors is an integer number (1825617024).

Almost surely, 2^11663664205 is an apocalyptic number.

It is an amenable number.

11663664205 is a deficient number, since it is larger than the sum of its proper divisors (2941271987).

11663664205 is a wasteful number, since it uses less digits than its factorization.

11663664205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101423195.

The product of its (nonzero) digits is 155520, while the sum is 40.

The spelling of 11663664205 in words is "eleven billion, six hundred sixty-three million, six hundred sixty-four thousand, two hundred five".