30820644494659 has 2 divisors, whose sum is σ = 30820644494660. Its totient is φ = 30820644494658.

The previous prime is 30820644494597. The next prime is 30820644494663. The reversal of 30820644494659 is 95649444602803.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 30820644494659 - 2¹⁹ = 30820643970371 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 30820644494659.

It is not a weakly prime, because it can be changed into another prime (30820644494669) 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, 15410322247329 + 15410322247330.

It is an arithmetic number, because the mean of its divisors is an integer number (15410322247330).

Almost surely, 2^{30820644494659} is an apocalyptic number.

30820644494659 is a deficient number, since it is larger than the sum of its proper divisors (1).

30820644494659 is an equidigital number, since it uses as much as digits as its factorization.

30820644494659 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 179159040, while the sum is 64.

The spelling of 30820644494659 in words is "thirty trillion, eight hundred twenty billion, six hundred forty-four million, four hundred ninety-four thousand, six hundred fifty-nine".