85447481227 has 4 divisors (see below), whose sum is σ = 85456351960. Its totient is φ = 85438610496.

The previous prime is 85447481183. The next prime is 85447481233. The reversal of 85447481227 is 72218474458.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-85447481227 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85447481257) 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, 4420902 + ... + 4440187.

It is an arithmetic number, because the mean of its divisors is an integer number (21364087990).

Almost surely, 2^85447481227 is an apocalyptic number.

85447481227 is a deficient number, since it is larger than the sum of its proper divisors (8870733).

85447481227 is an equidigital number, since it uses as much as digits as its factorization.

85447481227 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8870732.

The product of its digits is 4014080, while the sum is 52.

The spelling of 85447481227 in words is "eighty-five billion, four hundred forty-seven million, four hundred eighty-one thousand, two hundred twenty-seven".