166542124563 has 24 divisors (see below), whose sum is σ = 253248041280. Its totient is φ = 105173659440.

The previous prime is 166542124519. The next prime is 166542124621. The reversal of 166542124563 is 365421245661.

166542124563 is a `hidden beast` number, since 1 + 6 + 6 + 542 + 1 + 2 + 45 + 63 = 666.

166542124563 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 166542124563 - 2⁶ = 166542124499 is a prime.

It is not an unprimeable number, because it can be changed into a prime (166542124663) 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 23 ways as a sum of consecutive naturals, for example, 1816248 + ... + 1905738.

It is an arithmetic number, because the mean of its divisors is an integer number (10552001720).

Almost surely, 2^166542124563 is an apocalyptic number.

166542124563 is a deficient number, since it is larger than the sum of its proper divisors (86705916717).

166542124563 is a wasteful number, since it uses less digits than its factorization.

166542124563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100399 (or 100396 counting only the distinct ones).

The product of its digits is 1036800, while the sum is 45.

The spelling of 166542124563 in words is "one hundred sixty-six billion, five hundred forty-two million, one hundred twenty-four thousand, five hundred sixty-three".