166223539311 has 16 divisors (see below), whose sum is σ = 222953925600. Its totient is φ = 110154661760.

The previous prime is 166223539283. The next prime is 166223539331. The reversal of 166223539311 is 113935322661.

It is a cyclic number.

It is not a de Polignac number, because 166223539311 - 2¹⁰ = 166223538287 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166223539331) 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 15 ways as a sum of consecutive naturals, for example, 3077365 + ... + 3130913.

It is an arithmetic number, because the mean of its divisors is an integer number (13934620350).

Almost surely, 2^166223539311 is an apocalyptic number.

166223539311 is a deficient number, since it is larger than the sum of its proper divisors (56730386289).

166223539311 is a wasteful number, since it uses less digits than its factorization.

166223539311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59706.

The product of its digits is 174960, while the sum is 42.

The spelling of 166223539311 in words is "one hundred sixty-six billion, two hundred twenty-three million, five hundred thirty-nine thousand, three hundred eleven".