660573882321 has 8 divisors (see below), whose sum is σ = 897383387520. Its totient is φ = 432073482672.

The previous prime is 660573882301. The next prime is 660573882329. The reversal of 660573882321 is 123288375066.

It is a happy number.

660573882321 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 660573882321 - 2⁷ = 660573882193 is a prime.

It is not an unprimeable number, because it can be changed into a prime (660573882329) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2077276201 + ... + 2077276518.

It is an arithmetic number, because the mean of its divisors is an integer number (112172923440).

Almost surely, 2^660573882321 is an apocalyptic number.

It is an amenable number.

660573882321 is a deficient number, since it is larger than the sum of its proper divisors (236809505199).

660573882321 is a wasteful number, since it uses less digits than its factorization.

660573882321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4154552775.

The product of its (nonzero) digits is 2903040, while the sum is 51.

The spelling of 660573882321 in words is "six hundred sixty billion, five hundred seventy-three million, eight hundred eighty-two thousand, three hundred twenty-one".