204026251097 has 2 divisors, whose sum is σ = 204026251098. Its totient is φ = 204026251096.

The previous prime is 204026251069. The next prime is 204026251129. The reversal of 204026251097 is 790152620402.

204026251097 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 162256701721 + 41769549376 = 402811^2 + 204376^2 .

It is a cyclic number.

It is not a de Polignac number, because 204026251097 - 2²² = 204022056793 is a prime.

It is a super-2 number, since 2×204026251097² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 204026251097.

It is not a weakly prime, because it can be changed into another prime (204026251697) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102013125548 + 102013125549.

It is an arithmetic number, because the mean of its divisors is an integer number (102013125549).

Almost surely, 2^204026251097 is an apocalyptic number.

It is an amenable number.

204026251097 is a deficient number, since it is larger than the sum of its proper divisors (1).

204026251097 is an equidigital number, since it uses as much as digits as its factorization.

204026251097 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 60480, while the sum is 38.

Adding to 204026251097 its reverse (790152620402), we get a palindrome (994178871499).

The spelling of 204026251097 in words is "two hundred four billion, twenty-six million, two hundred fifty-one thousand, ninety-seven".