4252784782217 has 2 divisors, whose sum is σ = 4252784782218. Its totient is φ = 4252784782216.

The previous prime is 4252784782157. The next prime is 4252784782289. The reversal of 4252784782217 is 7122874872524.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3168314560576 + 1084470221641 = 1779976^2 + 1041379^2 .

It is a cyclic number.

It is not a de Polignac number, because 4252784782217 - 2⁴⁰ = 3153273154441 is a prime.

It is a super-2 number, since 2×4252784782217² (a number of 26 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (4252784772217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2126392391108 + 2126392391109.

It is an arithmetic number, because the mean of its divisors is an integer number (2126392391109).

Almost surely, 2^{4252784782217} is an apocalyptic number.

It is an amenable number.

4252784782217 is a deficient number, since it is larger than the sum of its proper divisors (1).

4252784782217 is an equidigital number, since it uses as much as digits as its factorization.

4252784782217 is an evil number, because the sum of its binary digits is even.

The product of its digits is 28098560, while the sum is 59.

The spelling of 4252784782217 in words is "four trillion, two hundred fifty-two billion, seven hundred eighty-four million, seven hundred eighty-two thousand, two hundred seventeen".