166122231355605 has 128 divisors (see below), whose sum is σ = 310222024519680. Its totient is φ = 74344641638400.

The previous prime is 166122231355589. The next prime is 166122231355627. The reversal of 166122231355605 is 506553132221661.

166122231355605 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 166122231355605 - 2⁴ = 166122231355589 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 4580263411 + ... + 4580299679.

It is an arithmetic number, because the mean of its divisors is an integer number (2423609566560).

Almost surely, 2^{166122231355605} is an apocalyptic number.

166122231355605 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

166122231355605 is a deficient number, since it is larger than the sum of its proper divisors (144099793164075).

166122231355605 is a wasteful number, since it uses less digits than its factorization.

166122231355605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41131.

The product of its (nonzero) digits is 1944000, while the sum is 48.

The spelling of 166122231355605 in words is "one hundred sixty-six trillion, one hundred twenty-two billion, two hundred thirty-one million, three hundred fifty-five thousand, six hundred five".