166634400324623 has 16 divisors (see below), whose sum is σ = 207753932281344. Its totient is φ = 129843766856160.

The previous prime is 166634400324607. The next prime is 166634400324647. The reversal of 166634400324623 is 326423004436661.

166634400324623 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 166634400324623 - 2⁴ = 166634400324607 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 (166634400324523) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1880915 + ... + 18352292.

It is an arithmetic number, because the mean of its divisors is an integer number (12984620767584).

Almost surely, 2^{166634400324623} is an apocalyptic number.

166634400324623 is a deficient number, since it is larger than the sum of its proper divisors (41119531956721).

166634400324623 is a wasteful number, since it uses less digits than its factorization.

166634400324623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20340182.

The product of its (nonzero) digits is 8957952, while the sum is 50.

The spelling of 166634400324623 in words is "one hundred sixty-six trillion, six hundred thirty-four billion, four hundred million, three hundred twenty-four thousand, six hundred twenty-three".