20530543013297 has 2 divisors, whose sum is σ = 20530543013298. Its totient is φ = 20530543013296.

The previous prime is 20530543013219. The next prime is 20530543013317. The reversal of 20530543013297 is 79231034503502.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18164609904016 + 2365933109281 = 4261996^2 + 1538159^2 .

It is a cyclic number.

It is not a de Polignac number, because 20530543013297 - 2⁴² = 16132496502193 is a prime.

It is not a weakly prime, because it can be changed into another prime (20530543073297) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10265271506648 + 10265271506649.

It is an arithmetic number, because the mean of its divisors is an integer number (10265271506649).

Almost surely, 2^{20530543013297} is an apocalyptic number.

It is an amenable number.

20530543013297 is a deficient number, since it is larger than the sum of its proper divisors (1).

20530543013297 is an equidigital number, since it uses as much as digits as its factorization.

20530543013297 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 680400, while the sum is 44.

Adding to 20530543013297 its reverse (79231034503502), we get a palindrome (99761577516799).

The spelling of 20530543013297 in words is "twenty trillion, five hundred thirty billion, five hundred forty-three million, thirteen thousand, two hundred ninety-seven".