85465656449 has 2 divisors, whose sum is σ = 85465656450. Its totient is φ = 85465656448.

The previous prime is 85465656443. The next prime is 85465656499. The reversal of 85465656449 is 94465656458.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 42955464049 + 42510192400 = 207257^2 + 206180^2 .

It is a cyclic number.

It is not a de Polignac number, because 85465656449 - 2¹⁶ = 85465590913 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 85465656391 and 85465656400.

It is not a weakly prime, because it can be changed into another prime (85465656443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42732828224 + 42732828225.

It is an arithmetic number, because the mean of its divisors is an integer number (42732828225).

Almost surely, 2^85465656449 is an apocalyptic number.

It is an amenable number.

85465656449 is a deficient number, since it is larger than the sum of its proper divisors (1).

85465656449 is an equidigital number, since it uses as much as digits as its factorization.

85465656449 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 124416000, while the sum is 62.

Subtracting 85465656449 from its reverse (94465656458), we obtain a palindrome (9000000009).

The spelling of 85465656449 in words is "eighty-five billion, four hundred sixty-five million, six hundred fifty-six thousand, four hundred forty-nine".