810144111 has 64 divisors (see below), whose sum is σ = 1353056256. Its totient is φ = 421027200.

The previous prime is 810144109. The next prime is 810144113. The reversal of 810144111 is 111441018.

810144111 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (810144109) and next prime (810144113).

It is not a de Polignac number, because 810144111 - 2¹ = 810144109 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (810144113) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 912910 + ... + 913796.

It is an arithmetic number, because the mean of its divisors is an integer number (21141504).

Almost surely, 2^810144111 is an apocalyptic number.

810144111 is a deficient number, since it is larger than the sum of its proper divisors (542912145).

810144111 is a wasteful number, since it uses less digits than its factorization.

810144111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1012.

The product of its (nonzero) digits is 128, while the sum is 21.

The square root of 810144111 is about 28463.0306011148. The cubic root of 810144111 is about 932.2250307776.

Adding to 810144111 its reverse (111441018), we get a palindrome (921585129).

The spelling of 810144111 in words is "eight hundred ten million, one hundred forty-four thousand, one hundred eleven".