11663646206 has 4 divisors (see below), whose sum is σ = 17495469312. Its totient is φ = 5831823102.

The previous prime is 11663646193. The next prime is 11663646233. The reversal of 11663646206 is 60264636611.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2915911550 + ... + 2915911553.

It is an arithmetic number, because the mean of its divisors is an integer number (4373867328).

Almost surely, 2^11663646206 is an apocalyptic number.

11663646206 is a deficient number, since it is larger than the sum of its proper divisors (5831823106).

11663646206 is an equidigital number, since it uses as much as digits as its factorization.

11663646206 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5831823105.

The product of its (nonzero) digits is 186624, while the sum is 41.

The spelling of 11663646206 in words is "eleven billion, six hundred sixty-three million, six hundred forty-six thousand, two hundred six".