166523635606026 has 8 divisors (see below), whose sum is σ = 333047271212064. Its totient is φ = 55507878535340.

The previous prime is 166523635605967. The next prime is 166523635606061. The reversal of 166523635606026 is 620606536325661.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

166523635606026 is an admirable number.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13876969633830 + ... + 13876969633841.

It is an arithmetic number, because the mean of its divisors is an integer number (41630908901508).

Almost surely, 2^{166523635606026} is an apocalyptic number.

166523635606026 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

166523635606026 is a wasteful number, since it uses less digits than its factorization.

166523635606026 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27753939267676.

The product of its (nonzero) digits is 41990400, while the sum is 57.

The spelling of 166523635606026 in words is "one hundred sixty-six trillion, five hundred twenty-three billion, six hundred thirty-five million, six hundred six thousand, twenty-six".