166210442413 has 4 divisors (see below), whose sum is σ = 166381617888. Its totient is φ = 166039266940.

The previous prime is 166210442401. The next prime is 166210442417. The reversal of 166210442413 is 314244012661.

166210442413 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-166210442413 is a prime.

It is a super-2 number, since 2×166210442413² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166210442417) 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, 85586281 + ... + 85588222.

It is an arithmetic number, because the mean of its divisors is an integer number (41595404472).

Almost surely, 2^166210442413 is an apocalyptic number.

It is an amenable number.

166210442413 is a deficient number, since it is larger than the sum of its proper divisors (171175475).

166210442413 is an equidigital number, since it uses as much as digits as its factorization.

166210442413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171175474.

The product of its (nonzero) digits is 27648, while the sum is 34.

The spelling of 166210442413 in words is "one hundred sixty-six billion, two hundred ten million, four hundred forty-two thousand, four hundred thirteen".