85468584217 has 2 divisors, whose sum is σ = 85468584218. Its totient is φ = 85468584216.

The previous prime is 85468584169. The next prime is 85468584281. The reversal of 85468584217 is 71248586458.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 85467937801 + 646416 = 292349^2 + 804^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-85468584217 is a prime.

It is not a weakly prime, because it can be changed into another prime (85468504217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42734292108 + 42734292109.

It is an arithmetic number, because the mean of its divisors is an integer number (42734292109).

Almost surely, 2^85468584217 is an apocalyptic number.

It is an amenable number.

85468584217 is a deficient number, since it is larger than the sum of its proper divisors (1).

85468584217 is an equidigital number, since it uses as much as digits as its factorization.

85468584217 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17203200, while the sum is 58.

The spelling of 85468584217 in words is "eighty-five billion, four hundred sixty-eight million, five hundred eighty-four thousand, two hundred seventeen".