820006820202 has 32 divisors (see below), whose sum is σ = 1736875602432. Its totient is φ = 257199179264.

The previous prime is 820006820197. The next prime is 820006820203. The reversal of 820006820202 is 202028600028.

It is a super-2 number, since 2×820006820202² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 820006820202.

It is not an unprimeable number, because it can be changed into a prime (820006820203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 447258 + ... + 1356485.

It is an arithmetic number, because the mean of its divisors is an integer number (54277362576).

Almost surely, 2^820006820202 is an apocalyptic number.

820006820202 is an abundant number, since it is smaller than the sum of its proper divisors (916868782230).

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

820006820202 is a wasteful number, since it uses less digits than its factorization.

820006820202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1808222.

The product of its (nonzero) digits is 6144, while the sum is 30.

The spelling of 820006820202 in words is "eight hundred twenty billion, six million, eight hundred twenty thousand, two hundred two".