20888086128 has 240 divisors, whose sum is σ = 69933336480. Its totient is φ = 5318756352.

The previous prime is 20888086103. The next prime is 20888086129. The reversal of 20888086128 is 82168088802.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20888086129) 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 47 ways as a sum of consecutive naturals, for example, 874926 + ... + 898482.

It is an arithmetic number, because the mean of its divisors is an integer number (291388902).

Almost surely, 2^20888086128 is an apocalyptic number.

20888086128 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20888086128, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34966668240).

20888086128 is an abundant number, since it is smaller than the sum of its proper divisors (49045250352).

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

20888086128 is a wasteful number, since it uses less digits than its factorization.

20888086128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23624 (or 23611 counting only the distinct ones).

The product of its (nonzero) digits is 786432, while the sum is 51.

The spelling of 20888086128 in words is "twenty billion, eight hundred eighty-eight million, eighty-six thousand, one hundred twenty-eight".