2656800811 has 4 divisors (see below), whose sum is σ = 3036343792. Its totient is φ = 2277257832.

The previous prime is 2656800793. The next prime is 2656800821. The reversal of 2656800811 is 1180086562.

2656800811 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: 1180086562 = 2 ⋅590043281.

It is a cyclic number.

It is not a de Polignac number, because 2656800811 - 2⁹ = 2656800299 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2656800821) 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, 189771480 + ... + 189771493.

It is an arithmetic number, because the mean of its divisors is an integer number (759085948).

Almost surely, 2^2656800811 is an apocalyptic number.

2656800811 is a deficient number, since it is larger than the sum of its proper divisors (379542981).

2656800811 is an equidigital number, since it uses as much as digits as its factorization.

2656800811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 379542980.

The product of its (nonzero) digits is 23040, while the sum is 37.

The square root of 2656800811 is about 51544.1636948355. The cubic root of 2656800811 is about 1385.0102847790.

The spelling of 2656800811 in words is "two billion, six hundred fifty-six million, eight hundred thousand, eight hundred eleven".