85807448064647 has 4 divisors (see below), whose sum is σ = 85821591378456. Its totient is φ = 85793304750840.

The previous prime is 85807448064641. The next prime is 85807448064713. The reversal of 85807448064647 is 74646084470858.

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 85807448064647 - 2²⁸ = 85807179629191 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 (85807448064641) 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, 7071647804 + ... + 7071659937.

It is an arithmetic number, because the mean of its divisors is an integer number (21455397844614).

Almost surely, 2^{85807448064647} is an apocalyptic number.

85807448064647 is a deficient number, since it is larger than the sum of its proper divisors (14143313809).

85807448064647 is a wasteful number, since it uses less digits than its factorization.

85807448064647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14143313808.

The product of its (nonzero) digits is 1156055040, while the sum is 71.

The spelling of 85807448064647 in words is "eighty-five trillion, eight hundred seven billion, four hundred forty-eight million, sixty-four thousand, six hundred forty-seven".