2271338044891 has 4 divisors (see below), whose sum is σ = 2275274506552. Its totient is φ = 2267401583232.

The previous prime is 2271338044873. The next prime is 2271338044939. The reversal of 2271338044891 is 1984408331722.

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 2271338044891 - 2²³ = 2271329656283 is a prime.

It is a super-3 number, since 3×2271338044891³ (a number of 38 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2271338044831) 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, 1968229965 + ... + 1968231118.

It is an arithmetic number, because the mean of its divisors is an integer number (568818626638).

Almost surely, 2^{2271338044891} is an apocalyptic number.

2271338044891 is a deficient number, since it is larger than the sum of its proper divisors (3936461661).

2271338044891 is an equidigital number, since it uses as much as digits as its factorization.

2271338044891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3936461660.

The product of its (nonzero) digits is 2322432, while the sum is 52.

The spelling of 2271338044891 in words is "two trillion, two hundred seventy-one billion, three hundred thirty-eight million, forty-four thousand, eight hundred ninety-one".