805828257553 has 8 divisors (see below), whose sum is σ = 930796276320. Its totient is φ = 689478722880.

The previous prime is 805828257547. The next prime is 805828257629. The reversal of 805828257553 is 355752828508.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-805828257553 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (805828257503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2154620823 + ... + 2154621196.

It is an arithmetic number, because the mean of its divisors is an integer number (116349534540).

Almost surely, 2^805828257553 is an apocalyptic number.

It is an amenable number.

805828257553 is a deficient number, since it is larger than the sum of its proper divisors (124968018767).

805828257553 is a wasteful number, since it uses less digits than its factorization.

805828257553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4309242047.

The product of its (nonzero) digits is 26880000, while the sum is 58.

The spelling of 805828257553 in words is "eight hundred five billion, eight hundred twenty-eight million, two hundred fifty-seven thousand, five hundred fifty-three".