166441343356116 has 144 divisors (see below), whose sum is σ = 426217603266000. Its totient is φ = 54761897558016.

The previous prime is 166441343356081. The next prime is 166441343356117. The reversal of 166441343356116 is 611653343144661.

166441343356116 is a `hidden beast` number, since 1 + 6 + 6 + 4 + 4 + 1 + 34 + 33 + 561 + 16 = 666.

It can be written as a sum of positive squares in 8 ways, for example, as 34544065856400 + 131897277499716 = 5877420^2 + 11484654^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166441343356117) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 607470640 + ... + 607744568.

It is an arithmetic number, because the mean of its divisors is an integer number (2959844467125).

Almost surely, 2^{166441343356116} is an apocalyptic number.

It is an amenable number.

166441343356116 is an abundant number, since it is smaller than the sum of its proper divisors (259776259909884).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

166441343356116 is a wasteful number, since it uses less digits than its factorization.

166441343356116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 274778 (or 274773 counting only the distinct ones).

The product of its digits is 11197440, while the sum is 54.

The spelling of 166441343356116 in words is "one hundred sixty-six trillion, four hundred forty-one billion, three hundred forty-three million, three hundred fifty-six thousand, one hundred sixteen".