166501533254464 has 14 divisors (see below), whose sum is σ = 330401480051954. Its totient is φ = 83250766627200.

The previous prime is 166501533254431. The next prime is 166501533254503. The reversal of 166501533254464 is 464452335105661.

It can be written as a sum of positive squares in only one way, i.e., 163256635404864 + 3244897849600 = 12777192^2 + 1801360^2 .

It is a congruent 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 as a sum of consecutive naturals, namely, 1300793228487 + ... + 1300793228614.

Almost surely, 2^{166501533254464} is an apocalyptic number.

It is an amenable number.

166501533254464 is a deficient number, since it is larger than the sum of its proper divisors (163899946797490).

166501533254464 is an equidigital number, since it uses as much as digits as its factorization.

166501533254464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2601586457113 (or 2601586457103 counting only the distinct ones).

The product of its (nonzero) digits is 31104000, while the sum is 55.

The spelling of 166501533254464 in words is "one hundred sixty-six trillion, five hundred one billion, five hundred thirty-three million, two hundred fifty-four thousand, four hundred sixty-four".