166533251166366 has 32 divisors (see below), whose sum is σ = 380813435570688. Its totient is φ = 47560178363040.

The previous prime is 166533251166361. The next prime is 166533251166367. The reversal of 166533251166366 is 663661152335661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166533251166361) 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, 864508450 + ... + 864701061.

It is an arithmetic number, because the mean of its divisors is an integer number (11900419861584).

Almost surely, 2^{166533251166366} is an apocalyptic number.

166533251166366 is an abundant number, since it is smaller than the sum of its proper divisors (214280184404322).

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

166533251166366 is a wasteful number, since it uses less digits than its factorization.

166533251166366 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1729211816.

The product of its digits is 62985600, while the sum is 60.

The spelling of 166533251166366 in words is "one hundred sixty-six trillion, five hundred thirty-three billion, two hundred fifty-one million, one hundred sixty-six thousand, three hundred sixty-six".