20910805922 has 16 divisors (see below), whose sum is σ = 31514184000. Its totient is φ = 10406155920.

The previous prime is 20910805921. The next prime is 20910806011. The reversal of 20910805922 is 22950801902.

It is not an unprimeable number, because it can be changed into a prime (20910805921) by changing a digit.

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, 535829 + ... + 573527.

It is an arithmetic number, because the mean of its divisors is an integer number (1969636500).

Almost surely, 2^20910805922 is an apocalyptic number.

20910805922 is a deficient number, since it is larger than the sum of its proper divisors (10603378078).

20910805922 is a wasteful number, since it uses less digits than its factorization.

20910805922 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39001.

The product of its (nonzero) digits is 25920, while the sum is 38.

The spelling of 20910805922 in words is "twenty billion, nine hundred ten million, eight hundred five thousand, nine hundred twenty-two".