811828711 has 4 divisors (see below), whose sum is σ = 811955952. Its totient is φ = 811701472.

The previous prime is 811828681. The next prime is 811828733. The reversal of 811828711 is 117828118.

811828711 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, and also an emirpimes, since its reverse is a distinct semiprime: 117828118 = 2 ⋅58914059.

It is a cyclic number.

It is not a de Polignac number, because 811828711 - 2¹¹ = 811826663 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (811828781) 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, 53515 + ... + 66988.

It is an arithmetic number, because the mean of its divisors is an integer number (202988988).

Almost surely, 2^811828711 is an apocalyptic number.

811828711 is a deficient number, since it is larger than the sum of its proper divisors (127241).

811828711 is a wasteful number, since it uses less digits than its factorization.

811828711 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127240.

The product of its digits is 7168, while the sum is 37.

The square root of 811828711 is about 28492.6080062882. The cubic root of 811828711 is about 932.8707344309.

The spelling of 811828711 in words is "eight hundred eleven million, eight hundred twenty-eight thousand, seven hundred eleven".