20320327667 has 8 divisors (see below), whose sum is σ = 20353824096. Its totient is φ = 20286856512.

The previous prime is 20320327639. The next prime is 20320327673. The reversal of 20320327667 is 76672302302.

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 20320327667 - 2¹⁸ = 20320065523 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20320327667.

It is not an unprimeable number, because it can be changed into a prime (20320327697) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2190503 + ... + 2199759.

It is an arithmetic number, because the mean of its divisors is an integer number (2544228012).

Almost surely, 2^20320327667 is an apocalyptic number.

20320327667 is a deficient number, since it is larger than the sum of its proper divisors (33496429).

20320327667 is an equidigital number, since it uses as much as digits as its factorization.

20320327667 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12637.

The product of its (nonzero) digits is 127008, while the sum is 38.

Adding to 20320327667 its reverse (76672302302), we get a palindrome (96992629969).

The spelling of 20320327667 in words is "twenty billion, three hundred twenty million, three hundred twenty-seven thousand, six hundred sixty-seven".