20796198097 has 2 divisors, whose sum is σ = 20796198098. Its totient is φ = 20796198096.

The previous prime is 20796198061. The next prime is 20796198109. The reversal of 20796198097 is 79089169702.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11329686481 + 9466511616 = 106441^2 + 97296^2 .

It is a cyclic number.

It is not a de Polignac number, because 20796198097 - 2¹¹ = 20796196049 is a prime.

It is not a weakly prime, because it can be changed into another prime (20796198197) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10398099048 + 10398099049.

It is an arithmetic number, because the mean of its divisors is an integer number (10398099049).

Almost surely, 2^20796198097 is an apocalyptic number.

It is an amenable number.

20796198097 is a deficient number, since it is larger than the sum of its proper divisors (1).

20796198097 is an equidigital number, since it uses as much as digits as its factorization.

20796198097 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3429216, while the sum is 58.

The spelling of 20796198097 in words is "twenty billion, seven hundred ninety-six million, one hundred ninety-eight thousand, ninety-seven".