820064516868200 has 96 divisors (see below), whose sum is σ = 1911492099532800. Its totient is φ = 327193728226560.

The previous prime is 820064516868143. The next prime is 820064516868221. The reversal of 820064516868200 is 2868615460028.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 132195641 + ... + 138259959.

It is an arithmetic number, because the mean of its divisors is an integer number (19911376036800).

Almost surely, 2^{820064516868200} is an apocalyptic number.

It is an amenable number.

820064516868200 is an abundant number, since it is smaller than the sum of its proper divisors (1091427582664600).

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

820064516868200 is a wasteful number, since it uses less digits than its factorization.

820064516868200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6066051 (or 6066042 counting only the distinct ones).

The product of its (nonzero) digits is 8847360, while the sum is 56.

The spelling of 820064516868200 in words is "eight hundred twenty trillion, sixty-four billion, five hundred sixteen million, eight hundred sixty-eight thousand, two hundred".