166884678751744 has 40 divisors (see below), whose sum is σ = 333488964512088. Its totient is φ = 83430939832320.

The previous prime is 166884678751741. The next prime is 166884678751753. The reversal of 166884678751744 is 447157876488661.

It is a congruent number.

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

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18512722 + ... + 26009425.

Almost surely, 2^{166884678751744} is an apocalyptic number.

It is an amenable number.

166884678751744 is a deficient number, since it is larger than the sum of its proper divisors (166604285760344).

166884678751744 is an frugal number, since it uses more digits than its factorization.

166884678751744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44529486 (or 44529470 counting only the distinct ones).

The product of its digits is 12138577920, while the sum is 82.

The spelling of 166884678751744 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-four".