53453847217 has 2 divisors, whose sum is σ = 53453847218. Its totient is φ = 53453847216.

The previous prime is 53453847157. The next prime is 53453847233. The reversal of 53453847217 is 71274835435.

53453847217 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., 49650534976 + 3803312241 = 222824^2 + 61671^2 .

It is a cyclic number.

It is not a de Polignac number, because 53453847217 - 2¹¹ = 53453845169 is a prime.

It is not a weakly prime, because it can be changed into another prime (53453847247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26726923608 + 26726923609.

It is an arithmetic number, because the mean of its divisors is an integer number (26726923609).

Almost surely, 2^53453847217 is an apocalyptic number.

It is an amenable number.

53453847217 is a deficient number, since it is larger than the sum of its proper divisors (1).

53453847217 is an equidigital number, since it uses as much as digits as its factorization.

53453847217 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2822400, while the sum is 49.

The spelling of 53453847217 in words is "fifty-three billion, four hundred fifty-three million, eight hundred forty-seven thousand, two hundred seventeen".