320120678767 has 2 divisors, whose sum is σ = 320120678768. Its totient is φ = 320120678766.

The previous prime is 320120678743. The next prime is 320120678777. The reversal of 320120678767 is 767876021023.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 320120678767 - 2¹¹ = 320120676719 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 320120678767.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (320120678777) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160060339383 + 160060339384.

It is an arithmetic number, because the mean of its divisors is an integer number (160060339384).

Almost surely, 2^320120678767 is an apocalyptic number.

320120678767 is a deficient number, since it is larger than the sum of its proper divisors (1).

320120678767 is an equidigital number, since it uses as much as digits as its factorization.

320120678767 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1185408, while the sum is 49.

The spelling of 320120678767 in words is "three hundred twenty billion, one hundred twenty million, six hundred seventy-eight thousand, seven hundred sixty-seven".