320320162516 has 24 divisors (see below), whose sum is σ = 569184071456. Its totient is φ = 157698303840.

The previous prime is 320320162511. The next prime is 320320162543. The reversal of 320320162516 is 615261023023.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320320162511) 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, 326155 + ... + 864301.

Almost surely, 2^320320162516 is an apocalyptic number.

It is an amenable number.

320320162516 is a deficient number, since it is larger than the sum of its proper divisors (248863908940).

320320162516 is a wasteful number, since it uses less digits than its factorization.

320320162516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 540439 (or 540437 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 31.

Adding to 320320162516 its reverse (615261023023), we get a palindrome (935581185539).

The spelling of 320320162516 in words is "three hundred twenty billion, three hundred twenty million, one hundred sixty-two thousand, five hundred sixteen".