811377808711 has 4 divisors (see below), whose sum is σ = 811380849552. Its totient is φ = 811374767872.

The previous prime is 811377808697. The next prime is 811377808729. The reversal of 811377808711 is 117808773118.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 811377808711 - 2¹¹ = 811377806663 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 (811377803711) 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 3 ways as a sum of consecutive naturals, for example, 1077091 + ... + 1668196.

It is an arithmetic number, because the mean of its divisors is an integer number (202845212388).

Almost surely, 2^811377808711 is an apocalyptic number.

811377808711 is a deficient number, since it is larger than the sum of its proper divisors (3040841).

811377808711 is a wasteful number, since it uses less digits than its factorization.

811377808711 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3040840.

The product of its (nonzero) digits is 526848, while the sum is 52.

The spelling of 811377808711 in words is "eight hundred eleven billion, three hundred seventy-seven million, eight hundred eight thousand, seven hundred eleven".