20416543016297 has 2 divisors, whose sum is σ = 20416543016298. Its totient is φ = 20416543016296.

The previous prime is 20416543016279. The next prime is 20416543016341. The reversal of 20416543016297 is 79261034561402.

Together with previous prime (20416543016279) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12027433227481 + 8389109788816 = 3468059^2 + 2896396^2 .

It is a cyclic number.

It is not a de Polignac number, because 20416543016297 - 2²² = 20416538821993 is a prime.

It is not a weakly prime, because it can be changed into another prime (20416543018297) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10208271508148 + 10208271508149.

It is an arithmetic number, because the mean of its divisors is an integer number (10208271508149).

Almost surely, 2^{20416543016297} is an apocalyptic number.

It is an amenable number.

20416543016297 is a deficient number, since it is larger than the sum of its proper divisors (1).

20416543016297 is an equidigital number, since it uses as much as digits as its factorization.

20416543016297 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2177280, while the sum is 50.

Adding to 20416543016297 its reverse (79261034561402), we get a palindrome (99677577577699).

The spelling of 20416543016297 in words is "twenty trillion, four hundred sixteen billion, five hundred forty-three million, sixteen thousand, two hundred ninety-seven".