20804884206 has 16 divisors (see below), whose sum is σ = 44057402064. Its totient is φ = 6527022464.

The previous prime is 20804884193. The next prime is 20804884211. The reversal of 20804884206 is 60248840802.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 101984625 + ... + 101984828.

It is an arithmetic number, because the mean of its divisors is an integer number (2753587629).

Almost surely, 2^20804884206 is an apocalyptic number.

20804884206 is an abundant number, since it is smaller than the sum of its proper divisors (23252517858).

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

20804884206 is a wasteful number, since it uses less digits than its factorization.

20804884206 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 203969475.

The product of its (nonzero) digits is 196608, while the sum is 42.

The spelling of 20804884206 in words is "twenty billion, eight hundred four million, eight hundred eighty-four thousand, two hundred six".