810881439466 has 16 divisors (see below), whose sum is σ = 1390412206656. Its totient is φ = 347438182176.

The previous prime is 810881439461. The next prime is 810881439527. The reversal of 810881439466 is 664934188018.

It is a self number, because there is not a number n which added to its sum of digits gives 810881439466.

It is not an unprimeable number, because it can be changed into a prime (810881439461) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6808416 + ... + 6926491.

It is an arithmetic number, because the mean of its divisors is an integer number (86900762916).

Almost surely, 2^810881439466 is an apocalyptic number.

810881439466 is a deficient number, since it is larger than the sum of its proper divisors (579530767190).

810881439466 is a wasteful number, since it uses less digits than its factorization.

810881439466 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13739133.

The product of its (nonzero) digits is 7962624, while the sum is 58.

The spelling of 810881439466 in words is "eight hundred ten billion, eight hundred eighty-one million, four hundred thirty-nine thousand, four hundred sixty-six".