320218547057 has 8 divisors (see below), whose sum is σ = 339139200096. Its totient is φ = 301307257152.

The previous prime is 320218547053. The next prime is 320218547063. The reversal of 320218547057 is 750745812023.

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 320218547057 - 2² = 320218547053 is a prime.

It is a super-2 number, since 2×320218547057² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 320218546999 and 320218547017.

It is not an unprimeable number, because it can be changed into a prime (320218547053) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2270303 + ... + 2407220.

It is an arithmetic number, because the mean of its divisors is an integer number (42392400012).

Almost surely, 2^320218547057 is an apocalyptic number.

It is an amenable number.

320218547057 is a deficient number, since it is larger than the sum of its proper divisors (18920653039).

320218547057 is a wasteful number, since it uses less digits than its factorization.

320218547057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4681567.

The product of its (nonzero) digits is 470400, while the sum is 44.

The spelling of 320218547057 in words is "three hundred twenty billion, two hundred eighteen million, five hundred forty-seven thousand, fifty-seven".