820808868002 has 32 divisors (see below), whose sum is σ = 1255683631104. Its totient is φ = 402295507200.

The previous prime is 820808867999. The next prime is 820808868023. The reversal of 820808868002 is 200868808028.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 63587633 + ... + 63600539.

It is an arithmetic number, because the mean of its divisors is an integer number (39240113472).

Almost surely, 2^820808868002 is an apocalyptic number.

820808868002 is a deficient number, since it is larger than the sum of its proper divisors (434874763102).

820808868002 is a wasteful number, since it uses less digits than its factorization.

820808868002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14714.

The product of its (nonzero) digits is 786432, while the sum is 50.

The spelling of 820808868002 in words is "eight hundred twenty billion, eight hundred eight million, eight hundred sixty-eight thousand, two".