320240087779 has 2 divisors, whose sum is σ = 320240087780. Its totient is φ = 320240087778.

The previous prime is 320240087767. The next prime is 320240087837. The reversal of 320240087779 is 977780042023.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 320240087779 - 2⁵ = 320240087747 is a prime.

It is not a weakly prime, because it can be changed into another prime (320240087719) 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 as a sum of consecutive naturals, namely, 160120043889 + 160120043890.

It is an arithmetic number, because the mean of its divisors is an integer number (160120043890).

Almost surely, 2^320240087779 is an apocalyptic number.

320240087779 is a deficient number, since it is larger than the sum of its proper divisors (1).

320240087779 is an equidigital number, since it uses as much as digits as its factorization.

320240087779 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 320240087779 in words is "three hundred twenty billion, two hundred forty million, eighty-seven thousand, seven hundred seventy-nine".