166884678751745 has 16 divisors (see below), whose sum is σ = 200383549809408. Its totient is φ = 133426457124480.

The previous prime is 166884678751741. The next prime is 166884678751753. The reversal of 166884678751745 is 547157876488661.

It is not a de Polignac number, because 166884678751745 - 2² = 166884678751741 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (166884678751741) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 333167672 + ... + 333668198.

It is an arithmetic number, because the mean of its divisors is an integer number (12523971863088).

Almost surely, 2^{166884678751745} is an apocalyptic number.

It is an amenable number.

166884678751745 is a deficient number, since it is larger than the sum of its proper divisors (33498871057663).

166884678751745 is a wasteful number, since it uses less digits than its factorization.

166884678751745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 541000.

The product of its digits is 15173222400, while the sum is 83.

The spelling of 166884678751745 in words is "one hundred sixty-six trillion, eight hundred eighty-four billion, six hundred seventy-eight million, seven hundred fifty-one thousand, seven hundred forty-five".