30820644494597 has 2 divisors, whose sum is σ = 30820644494598. Its totient is φ = 30820644494596.

The previous prime is 30820644494557. The next prime is 30820644494659. The reversal of 30820644494597 is 79549444602803.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 30602149950241 + 218494544356 = 5531921^2 + 467434^2 .

It is a cyclic number.

It is not a de Polignac number, because 30820644494597 - 2¹⁴ = 30820644478213 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30820644494557) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15410322247298 + 15410322247299.

It is an arithmetic number, because the mean of its divisors is an integer number (15410322247299).

Almost surely, 2^{30820644494597} is an apocalyptic number.

It is an amenable number.

30820644494597 is a deficient number, since it is larger than the sum of its proper divisors (1).

30820644494597 is an equidigital number, since it uses as much as digits as its factorization.

30820644494597 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 209018880, while the sum is 65.

The spelling of 30820644494597 in words is "thirty trillion, eight hundred twenty billion, six hundred forty-four million, four hundred ninety-four thousand, five hundred ninety-seven".