85165316416 has 28 divisors (see below), whose sum is σ = 169012877620. Its totient is φ = 42579394560.

The previous prime is 85165316413. The next prime is 85165316503. The reversal of 85165316416 is 61461356158.

It can be written as a sum of positive squares in 2 ways, for example, as 55131040000 + 30034276416 = 234800^2 + 173304^2 .

It is a super-2 number, since 2×85165316416² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85165316413) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 939790 + ... + 1026418.

Almost surely, 2^85165316416 is an apocalyptic number.

It is an amenable number.

85165316416 is a deficient number, since it is larger than the sum of its proper divisors (83847561204).

85165316416 is a wasteful number, since it uses less digits than its factorization.

85165316416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102002 (or 101992 counting only the distinct ones).

The product of its digits is 518400, while the sum is 46.

The spelling of 85165316416 in words is "eighty-five billion, one hundred sixty-five million, three hundred sixteen thousand, four hundred sixteen".