810881439434 has 64 divisors (see below), whose sum is σ = 1516587805440. Its totient is φ = 320376376320.

The previous prime is 810881439413. The next prime is 810881439439. The reversal of 810881439434 is 434934188018.

It is a Smith number, since the sum of its digits (53) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (810881439439) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1375829 + ... + 1874744.

It is an arithmetic number, because the mean of its divisors is an integer number (23696684460).

Almost surely, 2^810881439434 is an apocalyptic number.

810881439434 is a deficient number, since it is larger than the sum of its proper divisors (705706366006).

810881439434 is a wasteful number, since it uses less digits than its factorization.

810881439434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3250655.

The product of its (nonzero) digits is 2654208, while the sum is 53.

The spelling of 810881439434 in words is "eight hundred ten billion, eight hundred eighty-one million, four hundred thirty-nine thousand, four hundred thirty-four".