166351250145623 has 4 divisors (see below), whose sum is σ = 166351607434848. Its totient is φ = 166350892856400.

The previous prime is 166351250145527. The next prime is 166351250145701. The reversal of 166351250145623 is 326541052153661.

166351250145623 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 is a cyclic number.

It is not a de Polignac number, because 166351250145623 - 2²⁸ = 166350981710167 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166351250165623) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 177945311 + ... + 178877712.

It is an arithmetic number, because the mean of its divisors is an integer number (41587901858712).

Almost surely, 2^{166351250145623} is an apocalyptic number.

166351250145623 is a deficient number, since it is larger than the sum of its proper divisors (357289225).

166351250145623 is an equidigital number, since it uses as much as digits as its factorization.

166351250145623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 357289224.

The product of its (nonzero) digits is 3888000, while the sum is 50.

The spelling of 166351250145623 in words is "one hundred sixty-six trillion, three hundred fifty-one billion, two hundred fifty million, one hundred forty-five thousand, six hundred twenty-three".