166344134443 has 16 divisors (see below), whose sum is σ = 170055148032. Its totient is φ = 162672328000.

The previous prime is 166344134399. The next prime is 166344134447. The reversal of 166344134443 is 344431443661.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-166344134443 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 166344134443.

It is not an unprimeable number, because it can be changed into a prime (166344134447) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37880778 + ... + 37885168.

It is an arithmetic number, because the mean of its divisors is an integer number (10628446752).

Almost surely, 2^166344134443 is an apocalyptic number.

166344134443 is a deficient number, since it is larger than the sum of its proper divisors (3711013589).

166344134443 is a wasteful number, since it uses less digits than its factorization.

166344134443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8666.

The product of its digits is 995328, while the sum is 43.

The spelling of 166344134443 in words is "one hundred sixty-six billion, three hundred forty-four million, one hundred thirty-four thousand, four hundred forty-three".