828083243257 has 4 divisors (see below), whose sum is σ = 828085217956. Its totient is φ = 828081268560.

The previous prime is 828083243201. The next prime is 828083243321. The reversal of 828083243257 is 752342380828.

828083243257 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 681795352681 + 146287890576 = 825709^2 + 382476^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-828083243257 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (828083283257) 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, 80994 + ... + 1289467.

It is an arithmetic number, because the mean of its divisors is an integer number (207021304489).

Almost surely, 2^828083243257 is an apocalyptic number.

It is an amenable number.

828083243257 is a deficient number, since it is larger than the sum of its proper divisors (1974699).

828083243257 is a wasteful number, since it uses less digits than its factorization.

828083243257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1974698.

The product of its (nonzero) digits is 5160960, while the sum is 52.

The spelling of 828083243257 in words is "eight hundred twenty-eight billion, eighty-three million, two hundred forty-three thousand, two hundred fifty-seven".