11666722065206 has 32 divisors (see below), whose sum is σ = 18958788707040. Its totient is φ = 5384348647392.

The previous prime is 11666722065199. The next prime is 11666722065241. The reversal of 11666722065206 is 60256022766611.

It is a super-2 number, since 2×11666722065206² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 95213876 + ... + 95336328.

It is an arithmetic number, because the mean of its divisors is an integer number (592462147095).

Almost surely, 2^{11666722065206} is an apocalyptic number.

11666722065206 is a deficient number, since it is larger than the sum of its proper divisors (7292066641834).

11666722065206 is a wasteful number, since it uses less digits than its factorization.

11666722065206 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144177 (or 144151 counting only the distinct ones).

The product of its (nonzero) digits is 2177280, while the sum is 50.

The spelling of 11666722065206 in words is "eleven trillion, six hundred sixty-six billion, seven hundred twenty-two million, sixty-five thousand, two hundred six".