810044142211 has 4 divisors (see below), whose sum is σ = 810093851424. Its totient is φ = 809994433000.

The previous prime is 810044142209. The next prime is 810044142269. The reversal of 810044142211 is 112241440018.

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 810044142211 - 2¹ = 810044142209 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 810044142211.

It is not an unprimeable number, because it can be changed into a prime (810044142511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24830155 + ... + 24862756.

It is an arithmetic number, because the mean of its divisors is an integer number (202523462856).

Almost surely, 2^810044142211 is an apocalyptic number.

810044142211 is a deficient number, since it is larger than the sum of its proper divisors (49709213).

810044142211 is a wasteful number, since it uses less digits than its factorization.

810044142211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49709212.

The product of its (nonzero) digits is 2048, while the sum is 28.

Adding to 810044142211 its reverse (112241440018), we get a palindrome (922285582229).

The spelling of 810044142211 in words is "eight hundred ten billion, forty-four million, one hundred forty-two thousand, two hundred eleven".