20705198882 has 8 divisors (see below), whose sum is σ = 31061048016. Its totient is φ = 10351516212.

The previous prime is 20705198881. The next prime is 20705198887. The reversal of 20705198882 is 28889150702.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 20705198882.

It is not an unprimeable number, because it can be changed into a prime (20705198881) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 517508 + ... + 556079.

It is an arithmetic number, because the mean of its divisors is an integer number (3882631002).

Almost surely, 2^20705198882 is an apocalyptic number.

20705198882 is a deficient number, since it is larger than the sum of its proper divisors (10355849134).

20705198882 is a wasteful number, since it uses less digits than its factorization.

20705198882 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1083232.

The product of its (nonzero) digits is 645120, while the sum is 50.

The spelling of 20705198882 in words is "twenty billion, seven hundred five million, one hundred ninety-eight thousand, eight hundred eighty-two".