85206805471 has 8 divisors (see below), whose sum is σ = 89694512000. Its totient is φ = 80719412760.

The previous prime is 85206805441. The next prime is 85206805483. The reversal of 85206805471 is 17450860258.

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 85206805471 - 2²¹ = 85204708319 is a prime.

It is a super-3 number, since 3×85206805471³ (a number of 34 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85206805441) 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, 654580 + ... + 773878.

It is an arithmetic number, because the mean of its divisors is an integer number (11211814000).

Almost surely, 2^85206805471 is an apocalyptic number.

85206805471 is a deficient number, since it is larger than the sum of its proper divisors (4487706529).

85206805471 is a wasteful number, since it uses less digits than its factorization.

85206805471 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156909.

The product of its (nonzero) digits is 537600, while the sum is 46.

The spelling of 85206805471 in words is "eighty-five billion, two hundred six million, eight hundred five thousand, four hundred seventy-one".