85717526634 has 12 divisors (see below), whose sum is σ = 185721307746. Its totient is φ = 28572508872.

The previous prime is 85717526617. The next prime is 85717526639. The reversal of 85717526634 is 43662571758.

85717526634 is a `hidden beast` number, since 8 + 57 + 1 + 7 + 526 + 63 + 4 = 666.

It can be written as a sum of positive squares in only one way, i.e., 53909874225 + 31807652409 = 232185^2 + 178347^2 .

It is not an unprimeable number, because it can be changed into a prime (85717526639) 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 5 ways as a sum of consecutive naturals, for example, 2381042389 + ... + 2381042424.

Almost surely, 2^85717526634 is an apocalyptic number.

85717526634 is an abundant number, since it is smaller than the sum of its proper divisors (100003781112).

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

85717526634 is a wasteful number, since it uses less digits than its factorization.

85717526634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4762084821 (or 4762084818 counting only the distinct ones).

The product of its digits is 8467200, while the sum is 54.

The spelling of 85717526634 in words is "eighty-five billion, seven hundred seventeen million, five hundred twenty-six thousand, six hundred thirty-four".