847447744747 has 4 divisors (see below), whose sum is σ = 847456057216. Its totient is φ = 847439432280.

The previous prime is 847447744711. The next prime is 847447744771. The reversal of 847447744747 is 747447744748.

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 847447744747 - 2²⁷ = 847313527019 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (847447742747) 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, 4001388 + ... + 4207849.

It is an arithmetic number, because the mean of its divisors is an integer number (211864014304).

Almost surely, 2^847447744747 is an apocalyptic number.

847447744747 is a deficient number, since it is larger than the sum of its proper divisors (8312469).

847447744747 is a wasteful number, since it uses less digits than its factorization.

847447744747 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8312468.

The product of its digits is 550731776, while the sum is 67.

Subtracting from 847447744747 its reverse (747447744748), we obtain a palindrome (99999999999).

The spelling of 847447744747 in words is "eight hundred forty-seven billion, four hundred forty-seven million, seven hundred forty-four thousand, seven hundred forty-seven".