320609428099 has 2 divisors, whose sum is σ = 320609428100. Its totient is φ = 320609428098.

The previous prime is 320609428079. The next prime is 320609428103. The reversal of 320609428099 is 990824906023.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 320609428099 - 2²¹ = 320607330947 is a prime.

It is not a weakly prime, because it can be changed into another prime (320609428079) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160304714049 + 160304714050.

It is an arithmetic number, because the mean of its divisors is an integer number (160304714050).

Almost surely, 2^320609428099 is an apocalyptic number.

320609428099 is a deficient number, since it is larger than the sum of its proper divisors (1).

320609428099 is an equidigital number, since it uses as much as digits as its factorization.

320609428099 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1679616, while the sum is 52.

The spelling of 320609428099 in words is "three hundred twenty billion, six hundred nine million, four hundred twenty-eight thousand, ninety-nine".