320765994667 has 2 divisors, whose sum is σ = 320765994668. Its totient is φ = 320765994666.

The previous prime is 320765994631. The next prime is 320765994677. The reversal of 320765994667 is 766499567023.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 320765994667 - 2¹¹ = 320765992619 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 320765994599 and 320765994608.

It is not a weakly prime, because it can be changed into another prime (320765994617) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160382997333 + 160382997334.

It is an arithmetic number, because the mean of its divisors is an integer number (160382997334).

Almost surely, 2^320765994667 is an apocalyptic number.

320765994667 is a deficient number, since it is larger than the sum of its proper divisors (1).

320765994667 is an equidigital number, since it uses as much as digits as its factorization.

320765994667 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 102876480, while the sum is 64.

The spelling of 320765994667 in words is "three hundred twenty billion, seven hundred sixty-five million, nine hundred ninety-four thousand, six hundred sixty-seven".