847699307777 has 12 divisors (see below), whose sum is σ = 1020102616980. Its totient is φ = 701544253536.

The previous prime is 847699307723. The next prime is 847699307797. The reversal of 847699307777 is 777703996748.

It can be written as a sum of positive squares in 2 ways, for example, as 485775544576 + 361923763201 = 696976^2 + 601601^2 .

It is not a de Polignac number, because 847699307777 - 2²⁰ = 847698259201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (847699307717) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 298274198 + ... + 298277039.

It is an arithmetic number, because the mean of its divisors is an integer number (85008551415).

Almost surely, 2^847699307777 is an apocalyptic number.

It is an amenable number.

847699307777 is a deficient number, since it is larger than the sum of its proper divisors (172403309203).

847699307777 is a wasteful number, since it uses less digits than its factorization.

847699307777 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 596551280 (or 596551273 counting only the distinct ones).

The product of its (nonzero) digits is 784147392, while the sum is 74.

The spelling of 847699307777 in words is "eight hundred forty-seven billion, six hundred ninety-nine million, three hundred seven thousand, seven hundred seventy-seven".