320008180645 has 8 divisors (see below), whose sum is σ = 385426828800. Its totient is φ = 255061869840.

The previous prime is 320008180643. The next prime is 320008180699. The reversal of 320008180645 is 546081800023.

It is a happy number.

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

It is not a de Polignac number, because 320008180645 - 2¹ = 320008180643 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320008180643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 118082845 + ... + 118085554.

It is an arithmetic number, because the mean of its divisors is an integer number (48178353600).

Almost surely, 2^320008180645 is an apocalyptic number.

It is an amenable number.

320008180645 is a deficient number, since it is larger than the sum of its proper divisors (65418648155).

320008180645 is a wasteful number, since it uses less digits than its factorization.

320008180645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 236168675.

The product of its (nonzero) digits is 46080, while the sum is 37.

Adding to 320008180645 its reverse (546081800023), we get a palindrome (866089980668).

The spelling of 320008180645 in words is "three hundred twenty billion, eight million, one hundred eighty thousand, six hundred forty-five".