85865157223 has 4 divisors (see below), whose sum is σ = 85886242848. Its totient is φ = 85844071600.

The previous prime is 85865157193. The next prime is 85865157229. The reversal of 85865157223 is 32275156858.

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 85865157223 - 2¹⁷ = 85865026151 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85865157229) 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, 10536703 + ... + 10544848.

It is an arithmetic number, because the mean of its divisors is an integer number (21471560712).

Almost surely, 2^85865157223 is an apocalyptic number.

85865157223 is a deficient number, since it is larger than the sum of its proper divisors (21085625).

85865157223 is a wasteful number, since it uses less digits than its factorization.

85865157223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21085624.

The product of its digits is 4032000, while the sum is 52.

The spelling of 85865157223 in words is "eighty-five billion, eight hundred sixty-five million, one hundred fifty-seven thousand, two hundred twenty-three".