166802558045 has 4 divisors (see below), whose sum is σ = 200163069660. Its totient is φ = 133442046432.

The previous prime is 166802558011. The next prime is 166802558047. The reversal of 166802558045 is 540855208661.

166802558045 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.

It can be written as a sum of positive squares in 2 ways, for example, as 23974496569 + 142828061476 = 154837^2 + 377926^2 .

It is a cyclic number.

It is not a de Polignac number, because 166802558045 - 2¹⁸ = 166802295901 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 166802557984 and 166802558002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166802558047) 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, 16680255800 + ... + 16680255809.

It is an arithmetic number, because the mean of its divisors is an integer number (50040767415).

Almost surely, 2^166802558045 is an apocalyptic number.

It is an amenable number.

166802558045 is a deficient number, since it is larger than the sum of its proper divisors (33360511615).

166802558045 is an equidigital number, since it uses as much as digits as its factorization.

166802558045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33360511614.

The product of its (nonzero) digits is 2304000, while the sum is 50.

The spelling of 166802558045 in words is "one hundred sixty-six billion, eight hundred two million, five hundred fifty-eight thousand, forty-five".