810104964481 has 4 divisors (see below), whose sum is σ = 810151536964. Its totient is φ = 810058392000.

The previous prime is 810104964443. The next prime is 810104964503. The reversal of 810104964481 is 184469401018.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 272493396081 + 537611568400 = 522009^2 + 733220^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-810104964481 is a prime.

It is a super-2 number, since 2×810104964481² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (810104964401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23260140 + ... + 23294941.

It is an arithmetic number, because the mean of its divisors is an integer number (202537884241).

Almost surely, 2^810104964481 is an apocalyptic number.

It is an amenable number.

810104964481 is a deficient number, since it is larger than the sum of its proper divisors (46572483).

810104964481 is a wasteful number, since it uses less digits than its factorization.

810104964481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46572482.

The product of its (nonzero) digits is 221184, while the sum is 46.

The spelling of 810104964481 in words is "eight hundred ten billion, one hundred four million, nine hundred sixty-four thousand, four hundred eighty-one".