20853908896 has 12 divisors (see below), whose sum is σ = 41056133202. Its totient is φ = 10426954432.

The previous prime is 20853908863. The next prime is 20853908921. The reversal of 20853908896 is 69880935802.

It can be written as a sum of positive squares in only one way, i.e., 20153777296 + 700131600 = 141964^2 + 26460^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 20853908896.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 325842295 + ... + 325842358.

Almost surely, 2^20853908896 is an apocalyptic number.

It is an amenable number.

20853908896 is a deficient number, since it is larger than the sum of its proper divisors (20202224306).

20853908896 is an equidigital number, since it uses as much as digits as its factorization.

20853908896 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 651684663 (or 651684655 counting only the distinct ones).

The product of its (nonzero) digits is 7464960, while the sum is 58.

The spelling of 20853908896 in words is "twenty billion, eight hundred fifty-three million, nine hundred eight thousand, eight hundred ninety-six".