85185168500 has 24 divisors (see below), whose sum is σ = 186044409096. Its totient is φ = 34074067200.

The previous prime is 85185168457. The next prime is 85185168503. The reversal of 85185168500 is 586158158.

It can be written as a sum of positive squares in 4 ways, for example, as 9286020496 + 75899148004 = 96364^2 + 275498^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85185168503) 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 in 7 ways as a sum of consecutive naturals, for example, 85184669 + ... + 85185668.

It is an arithmetic number, because the mean of its divisors is an integer number (7751850379).

Almost surely, 2^85185168500 is an apocalyptic number.

It is an amenable number.

85185168500 is an abundant number, since it is smaller than the sum of its proper divisors (100859240596).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

85185168500 is a wasteful number, since it uses less digits than its factorization.

85185168500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170370356 (or 170370344 counting only the distinct ones).

The product of its (nonzero) digits is 384000, while the sum is 47.

The spelling of 85185168500 in words is "eighty-five billion, one hundred eighty-five million, one hundred sixty-eight thousand, five hundred".