85524168644 has 12 divisors (see below), whose sum is σ = 149991956268. Its totient is φ = 42669324000.

The previous prime is 85524168617. The next prime is 85524168689. The reversal of 85524168644 is 44686142558.

It can be written as a sum of positive squares in 2 ways, for example, as 36722056900 + 48802111744 = 191630^2 + 220912^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23188007 + ... + 23191694.

It is an arithmetic number, because the mean of its divisors is an integer number (12499329689).

Almost surely, 2^85524168644 is an apocalyptic number.

It is an amenable number.

85524168644 is a deficient number, since it is larger than the sum of its proper divisors (64467787624).

85524168644 is a wasteful number, since it uses less digits than its factorization.

85524168644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46380166 (or 46380164 counting only the distinct ones).

The product of its digits is 7372800, while the sum is 53.

The spelling of 85524168644 in words is "eighty-five billion, five hundred twenty-four million, one hundred sixty-eight thousand, six hundred forty-four".