810863347800 has 192 divisors, whose sum is σ = 2752624892160. Its totient is φ = 195825088000.

The previous prime is 810863347799. The next prime is 810863347867. The reversal of 810863347800 is 8743368018.

It is a self number, because there is not a number n which added to its sum of digits gives 810863347800.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1502230 + ... + 1969370.

It is an arithmetic number, because the mean of its divisors is an integer number (14336587980).

Almost surely, 2^810863347800 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 810863347800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1376312446080).

810863347800 is an abundant number, since it is smaller than the sum of its proper divisors (1941761544360).

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

810863347800 is a wasteful number, since it uses less digits than its factorization.

810863347800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 467434 (or 467425 counting only the distinct ones).

The product of its (nonzero) digits is 774144, while the sum is 48.

The spelling of 810863347800 in words is "eight hundred ten billion, eight hundred sixty-three million, three hundred forty-seven thousand, eight hundred".