810796789728 has 288 divisors, whose sum is σ = 2465713426176. Its totient is φ = 252112379904.

The previous prime is 810796789703. The next prime is 810796789793. The reversal of 810796789728 is 827987697018.

810796789728 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (288).

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 224160976 + ... + 224164592.

It is an arithmetic number, because the mean of its divisors is an integer number (8561504952).

Almost surely, 2^810796789728 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 810796789728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1232856713088).

810796789728 is an abundant number, since it is smaller than the sum of its proper divisors (1654916636448).

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

810796789728 is a wasteful number, since it uses less digits than its factorization.

810796789728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4486 (or 4475 counting only the distinct ones).

The product of its (nonzero) digits is 170698752, while the sum is 72.

The spelling of 810796789728 in words is "eight hundred ten billion, seven hundred ninety-six million, seven hundred eighty-nine thousand, seven hundred twenty-eight".