166409458210 has 8 divisors (see below), whose sum is σ = 299537024796. Its totient is φ = 66563783280.

The previous prime is 166409458199. The next prime is 166409458213. The reversal of 166409458210 is 12854904661.

It is a happy number.

166409458210 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 159866427889 + 6543030321 = 399833^2 + 80889^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (166409458213) 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 3 ways as a sum of consecutive naturals, for example, 8320472901 + ... + 8320472920.

Almost surely, 2^166409458210 is an apocalyptic number.

166409458210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

166409458210 is a deficient number, since it is larger than the sum of its proper divisors (133127566586).

166409458210 is a wasteful number, since it uses less digits than its factorization.

166409458210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16640945828.

The product of its (nonzero) digits is 414720, while the sum is 46.

The spelling of 166409458210 in words is "one hundred sixty-six billion, four hundred nine million, four hundred fifty-eight thousand, two hundred ten".