805728770711 has 8 divisors (see below), whose sum is σ = 811740784800. Its totient is φ = 799718652288.

The previous prime is 805728770701. The next prime is 805728770719. The reversal of 805728770711 is 117077827508.

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

It is a cyclic number.

It is not a de Polignac number, because 805728770711 - 2¹⁰ = 805728769687 is a prime.

It is a super-2 number, since 2×805728770711² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (805728770719) 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, 385115 + ... + 1326563.

It is an arithmetic number, because the mean of its divisors is an integer number (101467598100).

Almost surely, 2^805728770711 is an apocalyptic number.

805728770711 is a deficient number, since it is larger than the sum of its proper divisors (6012014089).

805728770711 is a wasteful number, since it uses less digits than its factorization.

805728770711 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 947833.

The product of its (nonzero) digits is 1536640, while the sum is 53.

The spelling of 805728770711 in words is "eight hundred five billion, seven hundred twenty-eight million, seven hundred seventy thousand, seven hundred eleven".