810825314833 has 4 divisors (see below), whose sum is σ = 812192643108. Its totient is φ = 809457986560.

The previous prime is 810825314813. The next prime is 810825314837. The reversal of 810825314833 is 338413528018.

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 456790794769 + 354034520064 = 675863^2 + 595008^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-810825314833 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (810825314837) 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 3 ways as a sum of consecutive naturals, for example, 683663248 + ... + 683664433.

It is an arithmetic number, because the mean of its divisors is an integer number (203048160777).

Almost surely, 2^810825314833 is an apocalyptic number.

It is an amenable number.

810825314833 is a deficient number, since it is larger than the sum of its proper divisors (1367328275).

810825314833 is a wasteful number, since it uses less digits than its factorization.

810825314833 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1367328274.

The product of its (nonzero) digits is 552960, while the sum is 46.

The spelling of 810825314833 in words is "eight hundred ten billion, eight hundred twenty-five million, three hundred fourteen thousand, eight hundred thirty-three".