20320200097 has 2 divisors, whose sum is σ = 20320200098. Its totient is φ = 20320200096.

The previous prime is 20320200077. The next prime is 20320200107. The reversal of 20320200097 is 79000202302.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19087909281 + 1232290816 = 138159^2 + 35104^2 .

It is a cyclic number.

It is not a de Polignac number, because 20320200097 - 2³¹ = 18172716449 is a prime.

It is not a weakly prime, because it can be changed into another prime (20320200067) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10160100048 + 10160100049.

It is an arithmetic number, because the mean of its divisors is an integer number (10160100049).

Almost surely, 2^20320200097 is an apocalyptic number.

It is an amenable number.

20320200097 is a deficient number, since it is larger than the sum of its proper divisors (1).

20320200097 is an equidigital number, since it uses as much as digits as its factorization.

20320200097 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1512, while the sum is 25.

Adding to 20320200097 its reverse (79000202302), we get a palindrome (99320402399).

The spelling of 20320200097 in words is "twenty billion, three hundred twenty million, two hundred thousand, ninety-seven".