810200650820 has 48 divisors (see below), whose sum is σ = 1867483211328. Its totient is φ = 292810930560.

The previous prime is 810200650807. The next prime is 810200650837. The reversal of 810200650820 is 28056002018.

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 15 ways as a sum of consecutive naturals, for example, 11260859 + ... + 11332578.

It is an arithmetic number, because the mean of its divisors is an integer number (38905900236).

Almost surely, 2^810200650820 is an apocalyptic number.

It is an amenable number.

810200650820 is an abundant number, since it is smaller than the sum of its proper divisors (1057282560508).

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

810200650820 is a wasteful number, since it uses less digits than its factorization.

810200650820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22593620 (or 22593618 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 32.

Adding to 810200650820 its reverse (28056002018), we get a palindrome (838256652838).

The spelling of 810200650820 in words is "eight hundred ten billion, two hundred million, six hundred fifty thousand, eight hundred twenty".