320401019567 has 2 divisors, whose sum is σ = 320401019568. Its totient is φ = 320401019566.

The previous prime is 320401019563. The next prime is 320401019573. The reversal of 320401019567 is 765910104023.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 320401019567 - 2² = 320401019563 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 320401019567.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (320401019563) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160200509783 + 160200509784.

It is an arithmetic number, because the mean of its divisors is an integer number (160200509784).

Almost surely, 2^320401019567 is an apocalyptic number.

320401019567 is a deficient number, since it is larger than the sum of its proper divisors (1).

320401019567 is an equidigital number, since it uses as much as digits as its factorization.

320401019567 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 45360, while the sum is 38.

The spelling of 320401019567 in words is "three hundred twenty billion, four hundred one million, nineteen thousand, five hundred sixty-seven".