85665533224 has 8 divisors (see below), whose sum is σ = 160622874810. Its totient is φ = 42832766608.

The previous prime is 85665533203. The next prime is 85665533227. The reversal of 85665533224 is 42233556658.

It can be written as a sum of positive squares in only one way, i.e., 74327116900 + 11338416324 = 272630^2 + 106482^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (85665533227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5354095819 + ... + 5354095834.

Almost surely, 2^85665533224 is an apocalyptic number.

It is an amenable number.

85665533224 is a deficient number, since it is larger than the sum of its proper divisors (74957341586).

85665533224 is a wasteful number, since it uses less digits than its factorization.

85665533224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10708191659 (or 10708191655 counting only the distinct ones).

The product of its digits is 5184000, while the sum is 49.

The spelling of 85665533224 in words is "eighty-five billion, six hundred sixty-five million, five hundred thirty-three thousand, two hundred twenty-four".