20608381011 has 16 divisors (see below), whose sum is σ = 27525353600. Its totient is φ = 13715189568.

The previous prime is 20608380979. The next prime is 20608381037. The reversal of 20608381011 is 11018380602.

It is not a de Polignac number, because 20608381011 - 2⁵ = 20608380979 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20608381011.

It is not an unprimeable number, because it can be changed into a prime (20608381051) 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 15 ways as a sum of consecutive naturals, for example, 6321900 + ... + 6325158.

It is an arithmetic number, because the mean of its divisors is an integer number (1720334600).

Almost surely, 2^20608381011 is an apocalyptic number.

20608381011 is a deficient number, since it is larger than the sum of its proper divisors (6916972589).

20608381011 is a wasteful number, since it uses less digits than its factorization.

20608381011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6258.

The product of its (nonzero) digits is 2304, while the sum is 30.

The spelling of 20608381011 in words is "twenty billion, six hundred eight million, three hundred eighty-one thousand, eleven".