166288075583 has 8 divisors (see below), whose sum is σ = 190617667200. Its totient is φ = 142102022040.

The previous prime is 166288075573. The next prime is 166288075589. The reversal of 166288075583 is 385570882661.

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

It is a cyclic number.

It is not a de Polignac number, because 166288075583 - 2⁶ = 166288075519 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166288075589) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 35882033 + ... + 35886666.

It is an arithmetic number, because the mean of its divisors is an integer number (23827208400).

Almost surely, 2^166288075583 is an apocalyptic number.

166288075583 is a deficient number, since it is larger than the sum of its proper divisors (24329591617).

166288075583 is an equidigital number, since it uses as much as digits as its factorization.

166288075583 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71769037.

The product of its (nonzero) digits is 19353600, while the sum is 59.

The spelling of 166288075583 in words is "one hundred sixty-six billion, two hundred eighty-eight million, seventy-five thousand, five hundred eighty-three".