85223989618 has 8 divisors (see below), whose sum is σ = 127863495900. Its totient is φ = 42602824320.

The previous prime is 85223989589. The next prime is 85223989639. The reversal of 85223989618 is 81698932258.

It can be written as a sum of positive squares in 2 ways, for example, as 85172336649 + 51652969 = 291843^2 + 7187^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4573623 + ... + 4592218.

Almost surely, 2^85223989618 is an apocalyptic number.

85223989618 is a deficient number, since it is larger than the sum of its proper divisors (42639506282).

85223989618 is a wasteful number, since it uses less digits than its factorization.

85223989618 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9170492.

The product of its digits is 14929920, while the sum is 61.

The spelling of 85223989618 in words is "eighty-five billion, two hundred twenty-three million, nine hundred eighty-nine thousand, six hundred eighteen".