828031747077 has 24 divisors (see below), whose sum is σ = 1206298762136. Its totient is φ = 547304449536.

The previous prime is 828031747019. The next prime is 828031747079. The reversal of 828031747077 is 770747130828.

828031747077 is a `hidden beast` number, since 8 + 280 + 317 + 47 + 0 + 7 + 7 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 453994311681 + 374037435396 = 673791^2 + 611586^2 .

It is not a de Polignac number, because 828031747077 - 2¹² = 828031742981 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 (828031747079) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4593 + ... + 1286889.

Almost surely, 2^828031747077 is an apocalyptic number.

It is an amenable number.

828031747077 is a deficient number, since it is larger than the sum of its proper divisors (378267015059).

828031747077 is a wasteful number, since it uses less digits than its factorization.

828031747077 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1282917 (or 1282914 counting only the distinct ones).

The product of its (nonzero) digits is 3687936, while the sum is 54.

The spelling of 828031747077 in words is "eight hundred twenty-eight billion, thirty-one million, seven hundred forty-seven thousand, seventy-seven".