85855297545647 has 32 divisors (see below), whose sum is σ = 101184048307200. Its totient is φ = 72811242554400.

The previous prime is 85855297545601. The next prime is 85855297545653. The reversal of 85855297545647 is 74654579255858.

It is not a de Polignac number, because 85855297545647 - 2²⁴ = 85855280768431 is a prime.

It is a super-2 number, since 2×85855297545647² (a number of 29 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 (85855297542647) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 49272068 + ... + 50984774.

It is an arithmetic number, because the mean of its divisors is an integer number (3162001509600).

Almost surely, 2^{85855297545647} is an apocalyptic number.

85855297545647 is a deficient number, since it is larger than the sum of its proper divisors (15328750761553).

85855297545647 is a wasteful number, since it uses less digits than its factorization.

85855297545647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1714276 (or 1714262 counting only the distinct ones).

The product of its digits is 16934400000, while the sum is 80.

The spelling of 85855297545647 in words is "eighty-five trillion, eight hundred fifty-five billion, two hundred ninety-seven million, five hundred forty-five thousand, six hundred forty-seven".