85191504271 has 4 divisors (see below), whose sum is σ = 87939617344. Its totient is φ = 82443391200.

The previous prime is 85191504227. The next prime is 85191504283. The reversal of 85191504271 is 17240519158.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 85191504271 - 2³⁵ = 50831765903 is a prime.

It is a super-2 number, since 2×85191504271² (a number of 23 digits) contains 22 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 (85191574271) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1374056490 + ... + 1374056551.

It is an arithmetic number, because the mean of its divisors is an integer number (21984904336).

Almost surely, 2^85191504271 is an apocalyptic number.

85191504271 is a deficient number, since it is larger than the sum of its proper divisors (2748113073).

85191504271 is a wasteful number, since it uses less digits than its factorization.

85191504271 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2748113072.

The product of its (nonzero) digits is 100800, while the sum is 43.

The spelling of 85191504271 in words is "eighty-five billion, one hundred ninety-one million, five hundred four thousand, two hundred seventy-one".