320518527667 has 16 divisors (see below), whose sum is σ = 375869844000. Its totient is φ = 270626275584.

The previous prime is 320518527661. The next prime is 320518527671. The reversal of 320518527667 is 766725815023.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-320518527667 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (320518527661) 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 15 ways as a sum of consecutive naturals, for example, 22366042 + ... + 22380367.

It is an arithmetic number, because the mean of its divisors is an integer number (23491865250).

Almost surely, 2^320518527667 is an apocalyptic number.

320518527667 is a deficient number, since it is larger than the sum of its proper divisors (55351316333).

320518527667 is a wasteful number, since it uses less digits than its factorization.

320518527667 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44746470.

The product of its (nonzero) digits is 4233600, while the sum is 52.

The spelling of 320518527667 in words is "three hundred twenty billion, five hundred eighteen million, five hundred twenty-seven thousand, six hundred sixty-seven".