30420056593 has 2 divisors, whose sum is σ = 30420056594. Its totient is φ = 30420056592.

The previous prime is 30420056551. The next prime is 30420056599. The reversal of 30420056593 is 39565002403.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 28702119889 + 1717936704 = 169417^2 + 41448^2 .

It is an emirp because it is prime and its reverse (39565002403) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 30420056593 - 2²¹ = 30417959441 is a prime.

It is not a weakly prime, because it can be changed into another prime (30420056599) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15210028296 + 15210028297.

It is an arithmetic number, because the mean of its divisors is an integer number (15210028297).

Almost surely, 2^30420056593 is an apocalyptic number.

It is an amenable number.

30420056593 is a deficient number, since it is larger than the sum of its proper divisors (1).

30420056593 is an equidigital number, since it uses as much as digits as its factorization.

30420056593 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 97200, while the sum is 37.

Adding to 30420056593 its reverse (39565002403), we get a palindrome (69985058996).

The spelling of 30420056593 in words is "thirty billion, four hundred twenty million, fifty-six thousand, five hundred ninety-three".