85216267447 has 4 divisors (see below), whose sum is σ = 85216926256. Its totient is φ = 85215608640.

The previous prime is 85216267313. The next prime is 85216267453. The reversal of 85216267447 is 74476261258.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 85216267447 - 2¹¹ = 85216265399 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 85216267394 and 85216267403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85216265447) 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, 64218 + ... + 417799.

It is an arithmetic number, because the mean of its divisors is an integer number (21304231564).

Almost surely, 2^85216267447 is an apocalyptic number.

85216267447 is a deficient number, since it is larger than the sum of its proper divisors (658809).

85216267447 is a wasteful number, since it uses less digits than its factorization.

85216267447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 658808.

The product of its digits is 4515840, while the sum is 52.

The spelling of 85216267447 in words is "eighty-five billion, two hundred sixteen million, two hundred sixty-seven thousand, four hundred forty-seven".