166367742843 has 16 divisors (see below), whose sum is σ = 223397508096. Its totient is φ = 110126365440.

The previous prime is 166367742841. The next prime is 166367742881. The reversal of 166367742843 is 348247763661.

It is not a de Polignac number, because 166367742843 - 2¹ = 166367742841 is a prime.

It is not an unprimeable number, because it can be changed into a prime (166367742841) 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, 274155 + ... + 638667.

It is an arithmetic number, because the mean of its divisors is an integer number (13962344256).

Almost surely, 2^166367742843 is an apocalyptic number.

166367742843 is a deficient number, since it is larger than the sum of its proper divisors (57029765253).

166367742843 is a wasteful number, since it uses less digits than its factorization.

166367742843 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 365594.

The product of its digits is 24385536, while the sum is 57.

The spelling of 166367742843 in words is "one hundred sixty-six billion, three hundred sixty-seven million, seven hundred forty-two thousand, eight hundred forty-three".