805534840829 has 2 divisors, whose sum is σ = 805534840830. Its totient is φ = 805534840828.

The previous prime is 805534840741. The next prime is 805534840837. The reversal of 805534840829 is 928048435508.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 472103661604 + 333431179225 = 687098^2 + 577435^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-805534840829 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (805534843829) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 402767420414 + 402767420415.

It is an arithmetic number, because the mean of its divisors is an integer number (402767420415).

Almost surely, 2^805534840829 is an apocalyptic number.

It is an amenable number.

805534840829 is a deficient number, since it is larger than the sum of its proper divisors (1).

805534840829 is an equidigital number, since it uses as much as digits as its factorization.

805534840829 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11059200, while the sum is 56.

The spelling of 805534840829 in words is "eight hundred five billion, five hundred thirty-four million, eight hundred forty thousand, eight hundred twenty-nine".