20889835368 has 16 divisors (see below), whose sum is σ = 52224588480. Its totient is φ = 6963278448.

The previous prime is 20889835363. The next prime is 20889835381. The reversal of 20889835368 is 86353898802.

It is not an unprimeable number, because it can be changed into a prime (20889835363) 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 3 ways as a sum of consecutive naturals, for example, 435204880 + ... + 435204927.

It is an arithmetic number, because the mean of its divisors is an integer number (3264036780).

Almost surely, 2^20889835368 is an apocalyptic number.

It is an amenable number.

20889835368 is an abundant number, since it is smaller than the sum of its proper divisors (31334753112).

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

20889835368 is a wasteful number, since it uses less digits than its factorization.

20889835368 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 870409816 (or 870409812 counting only the distinct ones).

The product of its (nonzero) digits is 19906560, while the sum is 60.

The spelling of 20889835368 in words is "twenty billion, eight hundred eighty-nine million, eight hundred thirty-five thousand, three hundred sixty-eight".