28355299209197 has 2 divisors, whose sum is σ = 28355299209198. Its totient is φ = 28355299209196.

The previous prime is 28355299209143. The next prime is 28355299209247. The reversal of 28355299209197 is 79190299255382.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17682983752996 + 10672315456201 = 4205114^2 + 3266851^2 .

It is a cyclic number.

It is not a de Polignac number, because 28355299209197 - 2²⁴ = 28355282431981 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28355299209197.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28355299209397) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14177649604598 + 14177649604599.

It is an arithmetic number, because the mean of its divisors is an integer number (14177649604599).

Almost surely, 2^{28355299209197} is an apocalyptic number.

It is an amenable number.

28355299209197 is a deficient number, since it is larger than the sum of its proper divisors (1).

28355299209197 is an equidigital number, since it uses as much as digits as its factorization.

28355299209197 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 220449600, while the sum is 71.

The spelling of 28355299209197 in words is "twenty-eight trillion, three hundred fifty-five billion, two hundred ninety-nine million, two hundred nine thousand, one hundred ninety-seven".