85486246309 has 2 divisors, whose sum is σ = 85486246310. Its totient is φ = 85486246308.

The previous prime is 85486246297. The next prime is 85486246399. The reversal of 85486246309 is 90364268458.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 55703080225 + 29783166084 = 236015^2 + 172578^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-85486246309 is a prime.

It is a super-2 number, since 2×85486246309² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 85486246309.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85486246399) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42743123154 + 42743123155.

It is an arithmetic number, because the mean of its divisors is an integer number (42743123155).

Almost surely, 2^85486246309 is an apocalyptic number.

It is an amenable number.

85486246309 is a deficient number, since it is larger than the sum of its proper divisors (1).

85486246309 is an equidigital number, since it uses as much as digits as its factorization.

85486246309 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9953280, while the sum is 55.

The spelling of 85486246309 in words is "eighty-five billion, four hundred eighty-six million, two hundred forty-six thousand, three hundred nine".