85417047845 has 8 divisors (see below), whose sum is σ = 103515314040. Its totient is φ = 67657067200.

The previous prime is 85417047829. The next prime is 85417047851. The reversal of 85417047845 is 54874071458.

It can be written as a sum of positive squares in 4 ways, for example, as 38153418241 + 47263629604 = 195329^2 + 217402^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 85417047845 - 2⁴ = 85417047829 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 84570830 + ... + 84571839.

It is an arithmetic number, because the mean of its divisors is an integer number (12939414255).

Almost surely, 2^85417047845 is an apocalyptic number.

It is an amenable number.

85417047845 is a deficient number, since it is larger than the sum of its proper divisors (18098266195).

85417047845 is a wasteful number, since it uses less digits than its factorization.

85417047845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 169142775.

The product of its (nonzero) digits is 5017600, while the sum is 53.

The spelling of 85417047845 in words is "eighty-five billion, four hundred seventeen million, forty-seven thousand, eight hundred forty-five".