166210132240 has 40 divisors (see below), whose sum is σ = 387284241240. Its totient is φ = 66338558976.

The previous prime is 166210132229. The next prime is 166210132241. The reversal of 166210132240 is 42231012661.

It can be written as a sum of positive squares in 4 ways, for example, as 20847894544 + 145362237696 = 144388^2 + 381264^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a junction number, because it is equal to n+sod(n) for n = 166210132199 and 166210132208.

It is not an unprimeable number, because it can be changed into a prime (166210132241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2236555 + ... + 2309674.

It is an arithmetic number, because the mean of its divisors is an integer number (9682106031).

Almost surely, 2^166210132240 is an apocalyptic number.

166210132240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

166210132240 is an abundant number, since it is smaller than the sum of its proper divisors (221074109000).

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

166210132240 is a wasteful number, since it uses less digits than its factorization.

166210132240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4546699 (or 4546693 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 28.

The spelling of 166210132240 in words is "one hundred sixty-six billion, two hundred ten million, one hundred thirty-two thousand, two hundred forty".