810139288480 has 96 divisors (see below), whose sum is σ = 2015178782400. Its totient is φ = 306925443072.

The previous prime is 810139288417. The next prime is 810139288487. The reversal of 810139288480 is 84882931018.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (810139288487) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13373139 + ... + 13433581.

It is an arithmetic number, because the mean of its divisors is an integer number (20991445650).

Almost surely, 2^810139288480 is an apocalyptic number.

810139288480 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 810139288480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1007589391200).

810139288480 is an abundant number, since it is smaller than the sum of its proper divisors (1205039493920).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

810139288480 is a wasteful number, since it uses less digits than its factorization.

810139288480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64886 (or 64878 counting only the distinct ones).

The product of its (nonzero) digits is 884736, while the sum is 52.

The spelling of 810139288480 in words is "eight hundred ten billion, one hundred thirty-nine million, two hundred eighty-eight thousand, four hundred eighty".