320005240245 has 128 divisors (see below), whose sum is σ = 604848430080. Its totient is φ = 160178135040.

The previous prime is 320005240241. The next prime is 320005240259. The reversal of 320005240245 is 542042500023.

It is a happy number.

320005240245 is a `hidden beast` number, since 3 + 200 + 0 + 52 + 402 + 4 + 5 = 666.

It is not a de Polignac number, because 320005240245 - 2² = 320005240241 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320005240241) 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 127 ways as a sum of consecutive naturals, for example, 86556237 + ... + 86559933.

It is an arithmetic number, because the mean of its divisors is an integer number (4725378360).

Almost surely, 2^320005240245 is an apocalyptic number.

It is an amenable number.

320005240245 is a deficient number, since it is larger than the sum of its proper divisors (284843189835).

320005240245 is a wasteful number, since it uses less digits than its factorization.

320005240245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4252 (or 4246 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 27.

Adding to 320005240245 its reverse (542042500023), we get a palindrome (862047740268).

The spelling of 320005240245 in words is "three hundred twenty billion, five million, two hundred forty thousand, two hundred forty-five".