85682690181 has 12 divisors (see below), whose sum is σ = 135015148320. Its totient is φ = 51928903080.

The previous prime is 85682690179. The next prime is 85682690221. The reversal of 85682690181 is 18109628658.

It is a happy number.

85682690181 is a `hidden beast` number, since 8 + 568 + 2 + 69 + 0 + 18 + 1 = 666.

It is not a de Polignac number, because 85682690181 - 2¹ = 85682690179 is a prime.

It is a super-2 number, since 2×85682690181² (a number of 23 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (54) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85682690081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 432740761 + ... + 432740958.

It is an arithmetic number, because the mean of its divisors is an integer number (11251262360).

Almost surely, 2^85682690181 is an apocalyptic number.

It is an amenable number.

85682690181 is a deficient number, since it is larger than the sum of its proper divisors (49332458139).

85682690181 is a wasteful number, since it uses less digits than its factorization.

85682690181 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 865481736 (or 865481733 counting only the distinct ones).

The product of its (nonzero) digits is 1658880, while the sum is 54.

The spelling of 85682690181 in words is "eighty-five billion, six hundred eighty-two million, six hundred ninety thousand, one hundred eighty-one".