215065350397 has 2 divisors, whose sum is σ = 215065350398. Its totient is φ = 215065350396.

The previous prime is 215065350329. The next prime is 215065350403. The reversal of 215065350397 is 793053560512.

215065350397 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 144298177956 + 70767172441 = 379866^2 + 266021^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-215065350397 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (215065354397) 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, 107532675198 + 107532675199.

It is an arithmetic number, because the mean of its divisors is an integer number (107532675199).

Almost surely, 2^215065350397 is an apocalyptic number.

It is an amenable number.

215065350397 is a deficient number, since it is larger than the sum of its proper divisors (1).

215065350397 is an equidigital number, since it uses as much as digits as its factorization.

215065350397 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 850500, while the sum is 46.

The spelling of 215065350397 in words is "two hundred fifteen billion, sixty-five million, three hundred fifty thousand, three hundred ninety-seven".