868146802217 has 2 divisors, whose sum is σ = 868146802218. Its totient is φ = 868146802216.

The previous prime is 868146802189. The next prime is 868146802223. The reversal of 868146802217 is 712208641868.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 514955500816 + 353191301401 = 717604^2 + 594299^2 .

It is a cyclic number.

It is not a de Polignac number, because 868146802217 - 2³² = 863851834921 is a prime.

It is a super-2 number, since 2×868146802217² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (868146862217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 434073401108 + 434073401109.

It is an arithmetic number, because the mean of its divisors is an integer number (434073401109).

Almost surely, 2^868146802217 is an apocalyptic number.

It is an amenable number.

868146802217 is a deficient number, since it is larger than the sum of its proper divisors (1).

868146802217 is an equidigital number, since it uses as much as digits as its factorization.

868146802217 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2064384, while the sum is 53.

The spelling of 868146802217 in words is "eight hundred sixty-eight billion, one hundred forty-six million, eight hundred two thousand, two hundred seventeen".