217884345596041 has 2 divisors, whose sum is σ = 217884345596042. Its totient is φ = 217884345596040.

The previous prime is 217884345596033. The next prime is 217884345596087. The reversal of 217884345596041 is 140695543488712.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 215942907440016 + 1941438156025 = 14694996^2 + 1393355^2 .

It is a cyclic number.

It is not a de Polignac number, because 217884345596041 - 2³ = 217884345596033 is a prime.

It is a super-2 number, since 2×217884345596041² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (217884345596011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 108942172798020 + 108942172798021.

It is an arithmetic number, because the mean of its divisors is an integer number (108942172798021).

It is a 2-persistent number, because it is pandigital, and so is 2⋅217884345596041 = 435768691192082, but 3⋅217884345596041 = 653653036788123 is not.

Almost surely, 2^{217884345596041} is an apocalyptic number.

It is an amenable number.

217884345596041 is a deficient number, since it is larger than the sum of its proper divisors (1).

217884345596041 is an equidigital number, since it uses as much as digits as its factorization.

217884345596041 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 232243200, while the sum is 67.

The spelling of 217884345596041 in words is "two hundred seventeen trillion, eight hundred eighty-four billion, three hundred forty-five million, five hundred ninety-six thousand, forty-one".