20320004567 has 2 divisors, whose sum is σ = 20320004568. Its totient is φ = 20320004566.

The previous prime is 20320004539. The next prime is 20320004597. The reversal of 20320004567 is 76540002302.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20320004567 - 2⁶ = 20320004503 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20320004597) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10160002283 + 10160002284.

It is an arithmetic number, because the mean of its divisors is an integer number (10160002284).

Almost surely, 2^20320004567 is an apocalyptic number.

20320004567 is a deficient number, since it is larger than the sum of its proper divisors (1).

20320004567 is an equidigital number, since it uses as much as digits as its factorization.

20320004567 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10080, while the sum is 29.

Adding to 20320004567 its reverse (76540002302), we get a palindrome (96860006869).

The spelling of 20320004567 in words is "twenty billion, three hundred twenty million, four thousand, five hundred sixty-seven".