20889600136 has 32 divisors (see below), whose sum is σ = 41485392000. Its totient is φ = 9827225856.

The previous prime is 20889600133. The next prime is 20889600161. The reversal of 20889600136 is 63100698802.

It is a junction number, because it is equal to n+sod(n) for n = 20889600092 and 20889600101.

It is not an unprimeable number, because it can be changed into a prime (20889600133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 428245 + ... + 474523.

It is an arithmetic number, because the mean of its divisors is an integer number (1296418500).

Almost surely, 2^20889600136 is an apocalyptic number.

It is an amenable number.

20889600136 is a deficient number, since it is larger than the sum of its proper divisors (20595791864).

20889600136 is a wasteful number, since it uses less digits than its factorization.

20889600136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49621 (or 49617 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 43.

The spelling of 20889600136 in words is "twenty billion, eight hundred eighty-nine million, six hundred thousand, one hundred thirty-six".