85686511471 has 8 divisors (see below), whose sum is σ = 93478503888. Its totient is φ = 77894904000.

The previous prime is 85686511451. The next prime is 85686511541. The reversal of 85686511471 is 17411568658.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 85686511471 - 2¹¹ = 85686509423 is a prime.

It is a super-3 number, since 3×85686511471³ (a number of 34 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85686511441) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 569401 + ... + 703981.

It is an arithmetic number, because the mean of its divisors is an integer number (11684812986).

Almost surely, 2^85686511471 is an apocalyptic number.

85686511471 is a deficient number, since it is larger than the sum of its proper divisors (7791992417).

85686511471 is a wasteful number, since it uses less digits than its factorization.

85686511471 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 192473.

The product of its digits is 1612800, while the sum is 52.

The spelling of 85686511471 in words is "eighty-five billion, six hundred eighty-six million, five hundred eleven thousand, four hundred seventy-one".