166365533534 has 32 divisors (see below), whose sum is σ = 259028428800. Its totient is φ = 80053362720.

The previous prime is 166365533513. The next prime is 166365533599. The reversal of 166365533534 is 435335563661.

It is a happy number.

166365533534 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 12871127 + ... + 12884045.

It is an arithmetic number, because the mean of its divisors is an integer number (8094638400).

Almost surely, 2^166365533534 is an apocalyptic number.

166365533534 is a deficient number, since it is larger than the sum of its proper divisors (92662895266).

166365533534 is a wasteful number, since it uses less digits than its factorization.

166365533534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14088.

The product of its digits is 8748000, while the sum is 50.

The spelling of 166365533534 in words is "one hundred sixty-six billion, three hundred sixty-five million, five hundred thirty-three thousand, five hundred thirty-four".