869085006217 has 2 divisors, whose sum is σ = 869085006218. Its totient is φ = 869085006216.

The previous prime is 869085006197. The next prime is 869085006233. The reversal of 869085006217 is 712600580968.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 669744187641 + 199340818576 = 818379^2 + 446476^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-869085006217 is a prime.

It is not a weakly prime, because it can be changed into another prime (869085006277) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 434542503108 + 434542503109.

It is an arithmetic number, because the mean of its divisors is an integer number (434542503109).

Almost surely, 2^869085006217 is an apocalyptic number.

It is an amenable number.

869085006217 is a deficient number, since it is larger than the sum of its proper divisors (1).

869085006217 is an equidigital number, since it uses as much as digits as its factorization.

869085006217 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1451520, while the sum is 52.

The spelling of 869085006217 in words is "eight hundred sixty-nine billion, eighty-five million, six thousand, two hundred seventeen".