85391869271 has 16 divisors (see below), whose sum is σ = 91233475200. Its totient is φ = 79693450848.

The previous prime is 85391869247. The next prime is 85391869289. The reversal of 85391869271 is 17296819358.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-85391869271 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 85391869271.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85391868271) 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 15 ways as a sum of consecutive naturals, for example, 246581 + ... + 481233.

It is an arithmetic number, because the mean of its divisors is an integer number (5702092200).

Almost surely, 2^85391869271 is an apocalyptic number.

85391869271 is a deficient number, since it is larger than the sum of its proper divisors (5841605929).

85391869271 is a wasteful number, since it uses less digits than its factorization.

85391869271 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 234958.

The product of its digits is 6531840, while the sum is 59.

The spelling of 85391869271 in words is "eighty-five billion, three hundred ninety-one million, eight hundred sixty-nine thousand, two hundred seventy-one".