166632736044160 has 64 divisors (see below), whose sum is σ = 398385120341880. Its totient is φ = 66648286347264.

The previous prime is 166632736044149. The next prime is 166632736044163. The reversal of 166632736044160 is 61440637236661.

It can be written as a sum of positive squares in 4 ways, for example, as 159090594324544 + 7542141719616 = 12613112^2 + 2746296^2 .

It is a tau number, because it is divible by the number of its divisors (64).

It is not an unprimeable number, because it can be changed into a prime (166632736044163) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 505107 + ... + 18262546.

Almost surely, 2^{166632736044160} is an apocalyptic number.

166632736044160 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

166632736044160 is an abundant number, since it is smaller than the sum of its proper divisors (231752384297720).

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

166632736044160 is a wasteful number, since it uses less digits than its factorization.

166632736044160 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18781545 (or 18781533 counting only the distinct ones).

The product of its (nonzero) digits is 15676416, while the sum is 55.

The spelling of 166632736044160 in words is "one hundred sixty-six trillion, six hundred thirty-two billion, seven hundred thirty-six million, forty-four thousand, one hundred sixty".